Previously I had increased the keyboard debounce to try and get around this issue happening to me.
But as mentioned earlier in that thread, a real option to try and reflow the solder joins.
Tonight I have gone over and just reflowed every key and it appears to be working better.
My 8 and { keys still double up, so I’ll try to hit those with some extra solder later.
Also the last post in that thread also mentions the debris issue with a little video.