I'm using the Windows desktop application. My current info is [Stable 60561 (0224963), Host 0.0.306, Windows 10 64-Bit (10.0.18363)], but I noticed this problem a long time ago, before learning about support.discord.com, and it happened then, too.
If I click the + button to upload a file (almost always an image), I'm able to drag files from that window and drop them into Discord. That's great, but if I then close that window without uploading something the normal way, Discord will stop responding and I'll need to reboot it.
This is a minor-to-moderate inconvenience at the most, and I've largely managed to just... avoid doing that in the first place. Nevertheless, it ended up happening again today, and I see that the problem still exists. If it's not too much trouble, could we get a bugfix for this?