Intellij Random Crashes on Linux

I've been running IntelliJ IDEA Pro on Antergos with i3wm. It's working great, except it randomly freezes. The UI freezes, although the mouse is still moveable. I switch to another window and return and then the IntelliJ screen is completely grey. When in this phase, I can't even close the program with the normal shortcut (which work with IntelliJ is not frozen); I have to open up a process manager and SIGKILL the process. When I then reopen the program, it shows no crash recovery or report a bug menus, it's as if the software closed normally right before.

I've also noticed that one way to replicate the crashes is to close tabs, weirdly enough. For instance, right clicking a tab and selecting "Close all" or "Close others" crashes the program. So does middle clicking a tab to close it. Clicking the X on the side of the tab doesn't crash the program. I find this really strange.

FWIW, I'm running a few other Java based applications and they run without a hiccup. Hope this issue can be solved.