I just spent the past few days working on a PowerApps app named "Flight Reporter" v0.91 (91% complete, so nearly v1.0).
I also have 2 other apps "Trip Reporter" and "Waypoint Reporter" each in several version (eg v0.60, v0.61, v0.75, etc).
I just looked at the list displays across PowerApps Web Studio, PowerApps Desktop Studio and PowerApps Mobile Client: NONE of the disiplays shows the same number of apps and the same versions - it's been DAYS I'm waiting for all these views to synchronize, but they NEVER do 😠 ...
Even worse, I just observed the following: 1. The PowerApps app named "Flight Report v091" is now suddenly MISSING from EVERY view (web, desktop, mobile client);
2. There is a PowerApps app named "Flight Reporter v080" which is STILL listed in the mobile client's view, but has LONG-since been DELETED !
WHAT the heck is happening with PowerApps? I thought it was declared ready-for-production-use back in SEPTEMBER, so WHY is it continuing to display what I consider CATASTROPHIC (project-killing, lawsuit-generating) errors????
It now looks like I may have lost an entire application which took DAYS to create - I NEED it back !!!
Make sure you are consistent in the environment you are working on. I don't know how you have things set up, but you need to make sure that you do not use the preview view (I find that preview gives you more options, but they do change and the standard view is more stable in ensuring that updates don't affect your apps as much.