Okay, pushed a quick fox for those issues. I couldn't actually reproduce the 3rd bug, but I tested it last so it may have gotten fixed with the others. I'll work on that in-game quest update tool to make it easier to skip over scenes that are buggy.
Yeah all the problems seem to be fixed now. Seeing the actual cutscene for the 3rd bug now, in the previous version the bloodthirsty slime was always spawned next to the left side wall of that area instead of the ledge it's supposed to jump down from. Since this is now fixed the cutscene will also proceed as intended.
Also, I think I reported this issue with fullscreen mode on a 1920x1200 monitor back in DD20, but it's worth mentioning again since it's pretty distracting. The black bars only work when the game starts in fullscreen, but it forgets about fullscreen setting on every run after the first one (starts in fullscreen for the unity splash, then always switches to windowed). Switching to fullscreen in-game causes this blinking garbage to appear, and going back to windowed mode doesn't restore the window size either: https://my.mixtape.moe/pkootw.webm
Ah yes, the black bars. I found some bugs in the settings menu so I changed things up a bit (also created a splash screen for when you initially boot the game, so you can fix your display settings before the cutscene begins). However, I can't reproduce the 16:10 issue because I don't have a monitor to test it on.
Can you give 1.3 a try to see if it's still happening? If so, I'll have to dig around some more to find a way to test it.
The black bars are still bugged if you switch from windowed to fullscreen, but the game at least remembers the setting now, and the bars work properly if the game starts in full screen (and don't alt+tab out), so that's progress.
Also, while messing with alt+tabbing, I noticed that after pressing alt in the chat part of the intro sequence, you can press X to quit the chat and hide the phone, and then you'll be unable to do anything and have to close the game. Is this a debug feature or some really weird bug? Also, the FPS Counter option in the settings menu is mislabeled as Full screen as well.
Sorry about the late response by the way, I've been away from my desktop (and will be away for a good while again).
Good timing actually, I was just about ready with another update (1.4). Fixed the alt issue as well.
I wonder if exclusive fullscreen vs windowed fullscreen will make a difference? I added a toggle, although it's a little janky because I'm not sure if I'll keep the option in. Previously the game was set to windowed fullscreen by default.