I have Header with Toolbar. Clicking on left icon it will open Left sidebar like so
enter image description here

But if I open the right sidebar, when I open it, it shifts the icons on the left under the left open sidebar, but this shouldn’t happen, the icons should stay in place
And the second problem is that when I open the right sidebar the content inside the page is not narrowed on the right side.
enter image description here

How it should like
enter image description here

import { FC } from 'react';
import { styled, Theme, CSSObject } from '@mui/material/styles';
import MuiDrawer from '@mui/material/Drawer';

const drawerWidth = 256;

const openedMixin = (theme: Theme): CSSObject => ({
    width: drawerWidth,
    transition: theme.transitions.create('width', {
        easing: theme.transitions.easing.sharp,
        duration: theme.transitions.duration.enteringScreen,
    }),
    overflowX: 'hidden',
});

const closedMixin = (theme: Theme): CSSObject => ({
    transition: theme.transitions.create('width', {
        easing: theme.transitions.easing.sharp,
        duration: theme.transitions.duration.leavingScreen,
    }),
    overflowX: 'hidden',
    width: 0,
    [theme.breakpoints.up('sm')]: {
        width: 0,
    },
});

const Drawer = styled(MuiDrawer, {
    shouldForwardProp: (prop) => prop !== 'open',
})(({ theme, open }) => ({
    width: drawerWidth,
    flexShrink: 0,
    whiteSpace: 'nowrap',
    boxSizing: 'border-box',
    position: 'absolute',
    right: 0,
    top: 0,
    ...(open && {
        ...openedMixin(theme),
        '& .MuiDrawer-paper': openedMixin(theme),
    }),
    ...(!open && {
        ...closedMixin(theme),
        '& .MuiDrawer-paper': closedMixin(theme),
    }),
}));

interface RightSidebarProps {
    open: boolean;
}

export const RightSidebar: FC<RightSidebarProps> = ({ open }) => {
    return (
        <Drawer variant="permanent" anchor="right" open={open}>
            <div>Right sidebar</div>
        </Drawer>
    );
};

Header with sidebars

const drawerWidth = 256;

const closedMixin = (theme: Theme): CSSObject => ({
    transition: theme.transitions.create('width', {
        easing: theme.transitions.easing.sharp,
        duration: theme.transitions.duration.leavingScreen,
    }),
    overflowX: 'hidden',
    width: `calc(${theme.spacing(7)} + 1px)`,
    [theme.breakpoints.up('sm')]: {
        width: `calc(${theme.spacing(8)} + 1px)`,
    },
});

const DrawerHeader = styled('div')(({ theme }) => ({
    display: 'flex',
    alignItems: 'center',
    justifyContent: 'flex-end',
    padding: theme.spacing(0, 1),
    ...theme.mixins.toolbar,
}));

const AppBar = styled(MuiAppBar, {
    shouldForwardProp: (prop) => prop !== 'openLeft' && prop !== 'openRight',
})<AppBarProps>(({ theme, openLeft, openRight }) => {
    const { isMedium } = useBreakpointsContext();
    return {
        transition: theme.transitions.create(['margin', 'width'], {
            easing: theme.transitions.easing.sharp,
            duration: theme.transitions.duration.leavingScreen,
        }),
        ...(openLeft &&
            !isMedium && {
                width: `calc(100% - ${drawerWidth}px)`,
                marginLeft: `${drawerWidth}px`,
                transition: theme.transitions.create(['margin', 'width'], {
                    easing: theme.transitions.easing.easeOut,
                    duration: theme.transitions.duration.enteringScreen,
                }),
            }),
        ...(!openLeft &&
            !isMedium && {
                width: `calc(100% - ${closedMixin(theme).width})`,
                marginLeft: `${closedMixin(theme).width}`,
            }),
        ...(openRight && {
            width: `calc(100% - ${drawerWidth}px)`,
            marginRight: `${drawerWidth}px`,
            transition: theme.transitions.create(['margin', 'width'], {
                easing: theme.transitions.easing.easeOut,
                duration: theme.transitions.duration.enteringScreen,
            }),
        }),
    };
});

<Box sx={{ display: 'flex' }}>
            <CssBaseline />
            <AppBar
                position="absolute"
                openLeft={openLeftSidebar}
                openRight={openRightSidebar}
                color="transparent"
                elevation={0}
                sx={{
                    borderBottom: 1,
                    borderColor: isDarkMode
                        ? 'rgba(255, 255, 255, 0.12)'
                        : '#E0E0E0',
                    display: 'flex',
                    flexDirection: 'row',
                    justifyContent: 'space-between',
                }}
            >
                <Toolbar disableGutters sx={{ padding: '12px 31px' }}>
                    {!isMedium && (
                        <IconButton
                            color="inherit"
                            aria-label="open drawer"
                            onClick={toggleLeftSidebar}
                            edge="start"
                            disableRipple
                            sx={{
                                transform: 'rotate(180deg)',
                                marginRight: '8px',
                            }}
                        >
                            <ViewSidebarIcon />
                        </IconButton>
                    )}
                    {!isMedium && (
                        <Box>
                            <IconButton
                                disableRipple
                                onClick={handleBack}
                                disabled={currentIndex <= 0}
                            >
                                <ChevronLeftIcon
                                    color="primary"
                                    sx={{ width: 20, height: 20 }}
                                />
                            </IconButton>
                            <IconButton
                                color="primary"
                                disableRipple
                                onClick={handleForward}
                                disabled={currentIndex >= history.length - 1}
                            >
                                <ChevronRightIcon
                                    sx={{ width: 20, height: 20 }}
                                />
                            </IconButton>
                        </Box>
                    )}
                    <BreadcrumbsMUI onMoveToPage={onMoveToPage} />
                </Toolbar>
                {isSmall && location.pathname === onboardingPath && pageTitle}
                <Toolbar>
                    {isTablet && location.pathname === walletPath && pageTitle}
                    <IconButton
                        color="inherit"
                        disableRipple
                        onClick={toggleTheme}
                    >
                        {isDarkMode ? (
                            <LightModeOutlinedIcon />
                        ) : (
                            <DarkModeOutlinedIcon />
                        )}
                    </IconButton>
                    <IconButton onClick={handleHelpDialogOpen} disableRipple>
                        <HelpOutlineIcon
                            sx={{ width: 24, height: 24 }}
                            color="primary"
                        />
                    </IconButton>
                    {location.pathname !== onboardingPath && (
                        <IconButton color="inherit" disableRipple onClick={toggleRightSidebar}>
                            <Badge>
                                <NotificationsOutlinedIcon />
                            </Badge>
                        </IconButton>
                    )}
                </Toolbar>
            </AppBar>
            {!isMedium && (
                <LeftSidebar
                    open={openLeftSidebar}
                    openAccount={openAccount}
                    handleAccountClick={handleAccountClick}
                    onMoveToPage={onMoveToPage}
                    userData={userData}
                    dealsCount={dealsCount}
                    avatarImg={avatarImg}
                />
            )}
            {isMedium && (
                <BottomNav
                    onMoveToPage={onMoveToPage}
                    onboardingComplete={userData?.onboarding_complete}
                />
            )}
            <RightSidebar open={openRightSidebar} />
            <Box
                component="main"
                sx={{
                    width: '100%',
                }}
            >
                <DrawerHeader />
                <Snackbar open={!userData?.allowed_operations}>
                    <Alert
                        severity="warning"
                        variant="filled"
                        sx={{ width: '100%' }}
                    >
                        Your account is being reviewed for approval. If
                        approved, you will gain access to further details and
                        the ability to make an investment.
                    </Alert>
                </Snackbar>
                <Box sx={{ flexGrow: 1, padding: isMedium ? '24px' : '32px' }}>
                    {children}
                </Box>
            </Box>
            <HelpDialog open={helpDialogOpen} onClose={handleHelpDialogClose} />
        </Box>

I think it could because of the wrong margin calculation. To solve second problem I can just simply add margin when right sidebar is open, not sure it’s the best solution