columns={columns}
onColumnToggle={onColumnToggle} />}
</Grid>
- { doMaximizePanel && !!!panelMaximized &&
+ { doMaximizePanel && !panelMaximized &&
<Tooltip title={`Maximize ${panelName || 'panel'}`} disableFocusListener>
<IconButton onClick={doMaximizePanel}><MaximizeIcon /></IconButton>
</Tooltip> }