Well, it sounds weird if it's a functionality in the browser, but not the app. It's weird if we're supposed to be able to create custom games in the app, but not save them and access them later.
How do we report bugs?
It sounds weird, but not if you know why.
The game used to be all flash based. But was rewritten into Unity. A few things are still only added to the browser (map making for example. But that example makes sense) and I think some minor stuff are still only in flash. For Single Player Custom game's, what you really want is to either make a level or template. And then only have 1 ongoing game at a time.
How do we report bugs?
It's an indie game, with 1 developer. So all forms of feedback goes to the same guy :) Anyway, go to Help -> Contact > Bug Report
Edited 3/9/2020 23:45:58