Sonic Advance/Advance 2/Pinball Party Tiny Chao Garden save corrupts randomly and game crashes when saving

[Sonicjan]

When first entering the Tiny Chao Garden in Advance 1, 2 and Pinball Party, everything works fine. But after some playtime the save completely corrupts, deleting or changing the Chao, giving max rings or setting them to 0, removing all Toys in the Garden and crashes when saving and exiting. When you reset the game and reenter the Garden, everything is deleted and a normal Chao Egg is sitting there (just like when you just started the game). Since Sonic Advance 1, 2 and Pinball Party have there own save next to the Tiny Chao Garden, the Emulator have problems with that save system. Playing the main game doesn't seem to be affected, but playing the Tiny Chao Garden is sadly impossible due to this. (occured on PS Vita and PC)

[endrift]

Which version of mGBA are you using?

[endrift]

Does this occur on latest dev builds?