C# TS 2021 UI UIMsg_Trace not firing in batch mode

[geeday]

I've updated the UI example:

C:\Program Files (x86)\National Instruments\TestStand 2021\UserInterfaces\Simple\CSharp\Source Code

and can see a UIMessageCodes.UIMsg_Trace message type in the callback of: axApplicationMgr_UIMessageEvent() when running a .seq file.

this is when my sequence file is using the "sequential model".

when i try to run a "batch model" sequence in the same UI code, a " UIMessageCodes.UIMsg_Trace" message is NEVER received.

these messages are received: 

UIMsg_ReportLocationChanged
UIMsg_ReportChanged
UIMsg_ModelState_PostProcessingComplete
UIMsg_EndFileExecution

so something is working.

I've got access to TS 4.2 code, and the Trace message does appear when I expect it, but I've not spotted any dfference between the code.

[geeday]

Further to this:

I just downloaded TS 2022 and the behaviour is as expected/desired.

Either TS 2021 is configured incorrectly, or it has a bug?

[geeday]

Figured it out.

If the "Hide Execution Windows" is CHECKED, the trace message does NOT appear in the AxApplicationMgr_UIMessageEvent callback.