I've just found 2 bugs in 20210918beta FW:
1st bug:
GB game: X (エックス) , put no-intro rom in EZjr, it runs well in GBC/GB, but when EZjr+ SFC SGB2, it just
freezes at beginning of the game(see the photo below), no matter how many times you try
View attachment 306246
2nd bug:
GB game: X (エックス) , when play the official game catridge in SFC SGB2, like other 22 old GB games, the SGB2 will automatically shows a
Special Default Color Palette like this:
View attachment 306247
View attachment 306249
View attachment 306250
but play X (エックス) in EZjr+SGB2 combo, there is no Special Default Color Palette show on screen, just the Normal Color Palettes