Button for minimized widget drawer does not respond to mouse click when it overlaps with a view window

[junjun-zhang]

Describe the bug

The button (located on the bottom right corner) for minimized widget drawer does not respond to mouse click when it overlaps with a view window, even though the button is visible.

To Reproduce

1. Click on the minimize icon on the top right corner of the drawer, the drawer will disappear, a black round icon appears at the bottom right corner of the window
2. When the current view window is tall enough to be overlapping with the minimized black drawer icon as shown in the screenshot, the drawer icon will NOT response to mouse click to bring back the drawer.

3. scroll down so that the view window no longer overlaps with the drawer icon (screenshot below) , mouse click on the icon will work again (which is the expected behaviour).

Expected behavior

The minimized drawer icon should always response to mouse click to bring back the drawer.

Version:

JBrowse desktop v1.5.1