136 final - sometimes clicking a date in the callender crashes to project list and doesn't save changes

Sometimes if I use a combination of typing and clicking in the date picker it crashes back to the custom project list. This happens since 135 btw and maybe before it too.

So by typing in the date "2022.10.12" like in the screenshot. But instead of pressing enter on the keyboard, I click the last nongrey day on the calendar which appears to be the 11th, it crashed (back to the project list) 2/3 times so far.

On a side note, the last day indicated under the main data config appears to be the 12th but I cannot pick this as the last day of OOS? Why not?