Big Map binding to Mouse button (mouse 5) opens map but won’t close

Big map mouse input binding will open map but won’t close. 

Steps to reproduce:

1 bind Big Map to a mouse input button. I used mouse 5.

2. In game: open the map by pressing the the new binding (Mouse 5)

3. Try to close the map with the same button (mouse 5)

Expected: the map to close

Actual: the map does not close

Workaround: close the map with the (M) button.

Additional: if you remove the keyboard binding for big map and leave the mouse binding active and open the map with the mouse binding, the map will still say, ‘Press (M) to close map’ - but it’s not bound to that key anymore. Can still close by pressing escape.