Here’s another problem that I can’t reproduce in a MWE:

In a tabulation that is set up like the example, in some cases the right column cell doesn’t top-align with the left one (see screenshot). In most cases it works.

There’s no \setuptabulate in my environment; don’t know what else could influence this behaviour. Doesn’t seem to be grid or font related.

Any hint where I could look?

Hraban