In each of my Azure SQL DB tables I have a field of datatype timestamp. These were added to resolve an issue where updates/inserts via PowerApps were unreliable.
If I create a collection based on the Azure SQL DB table with a timestamp field, then attempt to view the Collection (via File, Collections) this will invariably crash the web editor. If I use DropColumns in the ClearCollect statement (as per example below) I can view the collection without problems.
I have been experiencing other crashes when working galleries based on collections that contain timestamp columns - fingers crossed these may resolve now I am dropping the timestamp columns from the collections.