I posted this yesterday and got no response here
Please add your response here so microsoft can see this is not an isolated issue.
lets handle this on this new thread
Certainly not - if you've reverted to a working state I would not suggest breaking your app.
The team responsible is aware of the issue reports and actively investigating now. A SessionId can help expedite the location of the errors in the telemetry.
I guess we will use this thread
It is easy to check. Open and existing form associated with a SharePoint list form. Save and Publish
Try and open. . just spins.... Does this with Edge and Chrome. Have not checked IE or Firefox.
We have identified the issue are in the process of preparing a fix for this. This issue only happens if your custom form has a formula which accesses data in OnStart event. As a temporary workaround, you can move the formula from OnStart to SharePointIntegration.OnView/OnEdit/OnNew events.
We expect the fix to be released by end of day today/early tomorrow morning.