Tabulator sometimes renders with invisible rows

[techanfa]

ALL software version info

panel==1.4.4

Description of expected behavior and the observed behavior

Tabulator looks like this:

but should look like this:

Complete, minimal, self-contained example code that reproduces the issue

Unfortunately, don't have a minimum reproducible example. This seems to be a race condition, but I'm hopefull that the error message provided by tabulator is sufficient for a bug fix.

[philippjfr]

Without a reproducer it will be extremely hard to confirm if any fix we apply actually addresses the issue.