It's good to know... Also, yeah, I meant lemon slimes, those which are in the forest, not on the hills... Maybe that was some kind of a glitch in a browser or something else... Anyways, after I restarted my pc the problem with the "Slime Quest part 3" was gone... Also, I just remembered of another glitches that I've forgotten to add to the previous comment, so here they are:
The mage in mountains doesn't ask of which reward do you prefer after defeating his manticore... He instead gives you the one, you've chosen the previous time you've succeed in that exact task... The glitch wears off after you "die" to the manticore or choose to help the mage in his experiment instead of fighting his pet... I think that's the problem with the integer... It seems as if the line of code like "mage's_pet_defeated_reward = null;" is missing after choosing the reward and getting it...
Also, the wyvern's egg can be eaten after choosing the option of "selling it to cabals" and right before choosing the parameter you want to train... So it's like you're giving them the egg and while they are taking it from you you suddenly break it open and consume it's contents and still get the training...