Fair! I had thought it was in their latest update - that this was the "final" done-done version - however, glancing at it again - it does say - FINAL NOTES - We hope you’re just as excited as we are to see SpaceVenture finally reach this milestone. While the full release is a huge moment for us, we still have ideas and plans for future improvements, and we’re especially looking forward to continuing work on bringing the game to additional platforms.
So I am not sure if those improvements include supporting higher resolutions!
For the bugs, I'd test it in 1920x1080 and see if you still see it (I know you mentioned the inventory thing - but that was related to resolution), which I am 99.9999999% sure only supports 1920x1080 at the moment.