Sticky keys?

I've been having a problem randomly for a while where out of nowhere the last key I pressed just gets stuck on repeat. normally it's the unbound "G" key from my controller as it's produced by a faulty motion sensor and it triggers randomly but today it was my left click on the mouse and I've previously had it happen on the esc, tab, and M key. My initial assumption would be general grime, but I keep a tidy device and on disassembly I found all 3 clean. So far the only fix is a full reboot. Has anyone had this issue before?
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