Related:
From the related Vimeo page:
… it seems that misbehaviour affecting Tab Groups sometimes occurs when switching:
- from a group where not all tabs are loaded
- to another group in the same window
– worked around by attention to the first of the two groups. Begin to load all of that group’s tabs …
– tested. No need to wait until those loads are complete.
A switch away, whilst loading all tabs, was an effective workaround.