https://imgur.com/jyWrEcaIt happened once a week or two ago and now it happens every five minutes to every hour. I lose all unsaved progress.
In the above-posted video, as you can see, I leave the glitchy screen up for a long time. When I do this, the Everdrive loads with various error messages several times before working like normal. If, on the other hand, I turn off the GBA immediately upon crash, the Everdrive has no problem loading everything as normal.
It is ALWAYS on screens where a text box appears; the phenomenon does not seem to be triggered by any animation or action, as one time it froze when a dialogue text box was open and nothing else was happening.
I was 30 hours into the game when it started in addition to 20-30 minutes of play in many other games.
Is it a display mod issue? An Everdrive issue? Switching SD cards does not prevent this from happening, so it can't be that. I do not have an additional Everdrive to test it with, nor an additional GBA.
I have not played enough of another game to see if it happens there, but I have just started a new game of FF6 to casually compare translations, and I will post an update.