Indeed, there are fixes for problems related with memory leak, updated versions of PIXI, yeah, translations fixes... I'm not saying you are doing nothing, but there are more bugs than the ones I mentioned and those are not fixed yet:
-Music delay is not solved, not in the editor, not in the game. I have problems with this since the release of the maker, and I have to use external plugins (like TDDP_PreloadManager or SRDude Preloader Core) to try to fix it, but considering other problems like an overloaded RAM, incompatibilities with other plugins, load times...
-Bad performance and frame drops are in this list too. Every time I open or close a menu, for items, options, status or through plugin call, the frames drop from 60 to 15-10 for a few seconds, causing screen tearing and lag until the game returns to 60FPS. And not only the menus, no... when transporting my player to another map too, or using a picture, opening the message box... Those things are not supposing to work like that, right? There are no fixes or plugins that can solve this, and it's a real problem when you try to do an smooth transition between maps, cutscenes, or showing a picture, and things like those didn't happen with previous Makers.