Hello, I sadly couldn't replicate these two glitches over the course of testing.Great game, however trying to enter the volcano with the tepig quest and leaving the ranger school crashes me even on the most updated vbam and mgba, seemingly i have an even rarer setup to crash. I'm not that miffed though i only miss out on the later bits of postgame. Could be a random setting on the emulator? I liked it enough to move on to sors 1 and then 2 when thats completed so dont worry too much.
Did you use fast forward/frame skipping by chance? Have you tried regular vba?