Great news!
There’s a second, similar, bug that people have also reported in Windows which happens when working with annotations in workflows that have a fair number of nodes and/or annotations. I’ve made a patch jar which encompasses both the looping fix and the annotation fix; the thread post about that is here: Workflow freeze & graphics problems with KNIME 3.7
The nightly builds will start containing that fix likely the first week in January.
(Just FYI in case you start seeing the annotations related freeze.)