So I've been creating my own pack of assets to use in Asset Forge.
Under normal use, one would probably not encounter this, but I just happen to edit my assets, open Asset Forge, rinse and repeat dozens of times. I don't know how or why, but every time the program opens up, it goes a bit slower.

While doing so, I've also been able to replicate the "clicking acts like dragging the mouse" bug.

Rebooting Windows fixes the issue, which is.. an annoying step.

Thank you very much! :)

Thank you for the tip on rebooting windows. That seems to work for me as well. My use case is somewhat similar to yours. I open Asset Forge, create a bunch of assets, export, import, repeat. Definitely wish we didn't need to do this. Asset Forge is a great tool. I wonder if the cause is a memory leak or something?