If there's any long-press logic in there, it should only block the regular clicks if it is configured to do something - like in pretty much every desktop app that I just tested on my mac

There are long press handlers documented in https://github.com/JetBrains/compose-jb/blob/master/tutorials/Mouse_Events/README.md. Are they insufficient in your case?

Filed https://github.com/JetBrains/compose-jb/issues/140 - it's not about long presses. It's about "long" press in a sense that there's time that passes between DOWN and UP events, and clickable/toggleable doesn't fire at all