So basically as the title suggests, the lyrics will scroll up during play without any input from me. I've found that it happens mostly when a song is 90% played, but sometimes it can happen before that at a random interval.
It's hard to capture this on a screen recording because it's not reproducible on command; for example, resetting a song to 85% and waiting for it to reach 90% won't necessarily scroll the lyrics back up, even if it just had on the previous play.
As someone who has a lot of progressive, long-form songs (like the one highlighted in the screenshot) this can be irritating as I'm trying to read along to the lyrics and then it randomly scrolls all the way back to the top. Again, this is happening without any inputs (not pressing keyboard, not moving mouse).
I'm on the latest version of MM (5.0.4.2693), Windows 10, songs are on an SSD.
I've read through the changelog for the upcoming version of MediaMonkey and this isn't a known bug, so I'm assuming it's gone under the radar until now.