Creality Print crashing when selectiing object to paint support

If I have 2 or more objects on the bed of Creality Print 6.3, I can only select one object at a time to paint supports. If I select multiple objects, the painting supports button becomes faded and I can’t even use the L shortcut.

However, the problem is that if I select only 1 object to paint, and only then use ctrl to select another object, the software crashes.

I know this is kinda of an user error, but the software shouldn’t crash when doing it. It should appear a pop-up saying that I can only paint supports one object at a time or even does nothing at all. But it shouldn’t crash!