We recently upgraded to Nintex Version 3.3.1.0 in a very large (32 servers) farm.
We have been seeing workflows that leverage "Regular Expression" actions, occasionally locking up the entire Workflow engine for the whole farm. Eight web front ends timer job "Workflow" stuck for hours on end until they eventuallly "pause".
If we terminate the sole running workflow with Regular Expression step (that is also paused) - everything kicks off again after a cache clear.
If we do nothing and perform a cache clear, the workflow engines eventually pause again.
Anyone else seeing this?
