This remains a persistent bug. When testing strategies in custom projects or Retester, or Optimiser with WF, it will consistently get stuck roughly every 1000 strategies or so and just hang there and not move on to the next strategy test. It is as if it is in a loop. Totally random, I see it on any strategy type and all WF configurations. CPU drops to 1% and thats it, no more progress. You have to reboot SQX and start again. It is especially annoying because it renders Custom projects that use WF useless - you cant leave them running as they will get stuck after a few hours and fail to progress until you manually intervene.
Attached an example WF config with which it has happened. This takes around 3 minutes per strategy to test. Fill the bank with 1000 or so strategies, run it and it will randomly hang at some point on one of the strategies- if you are lucky yo u can do two maybe three 1000 cycles before it happens.