Dave, sorry to re-open this thread (felt like the right thing to do).
I have just updated a machine on V1.0.6 dashboard from 2.16.x to latest (2.22.1) and I get a very similar issue (restarted node-red, even restarted the server)...
Was this ever resolved? Is there a quick fix?
PS: Settings file is almost bog standard (no theme set)
EDIT more info...
NR Version 1.0.6, node v10.15.3.
- Deleted settings & let it re-create - same issue
- Deleted all flows (renamed file) restarted - imported original flows - same issue
- Deleted all flows - restarted - added a single button - OK
- Added a ui_table (V) - problem is back
- Removed ui_table (leaving the button) and deployed - get no dashboard (only the "Welcome to the Node-RED Dashboard")
- Restart node-red - back to showing the button only
Seems to be an issue with ui_table?