table: task state unknown

[oliver-sanders]

I spotted that sometimes the task status wasn't getting through to the task component in the table view (edit also spotted in the tree view, looks like a cylc-flow data store issue).

This results in a job in an active state associated with a task which appears to be in the waiting state:

But actually isn't:

Running the example in #1634, this appears to crop up fairly regularly.

I have only seen this in the table view so far.

Replicated with 2.3.0 and on master.

[MetRonnie]

Also appears in the graph view. And the tree view shows an empty cycle point. These are tasks that have actually succeeded.

[MetRonnie]

Problem remains on browser refresh, go away on workflow reload. So this is presumably a cylc-flow data store issue

[oliver-sanders]

Does this only occur in simulation mode?