Doesn't seem to be any bugs, but I just tried to play through the game without Jill, and I think it be a pretty funny idea where after you ignore her, then have any party member recruited, go interact with Jill at the odd state to have her say something about being ignored. Then maybe have an additional dialog when having a full team, making Jill maybe mad or something about having a full team without her.
While replaying, there's blue panel that may require to be waterlogged, and it doesn't do anything at the Viridian Dragon Temple. https://postimg.cc/TydwvTmg
(Here's my second chance of having Isabella in the non-vore party team) And maybe an idea where if you ignore Jill, then talk to Isabella at the Chub town, maybe try to convince or trick her into joining your party, and that could lock Jill from joining the team. Just an idea of having only one slime girl to be in the party.
Edit: Also there's no art update for the Empty Slime after water swelling into Gushing Slime.