WF crashes in the sim for the Swim2 device

6.3.1 SDK, up to date device files, windows 11

if you try to run a watch face for the swim2, you get this in the sim:

Error: Symbol Not Found Error
Details: Could not find symbol 'initialize'
Stack: 
  - initialize() at 704b03c0.mb:2136 0x30001571 
  - initialize() at C:\Users\James\workspace-prod\wftemp\source\wftempView.mc:9 0x10000056 
  - getInitialView() at C:\Users\James\workspace-prod\wftemp\source\wftempApp.mc:21 0x10000165 

Encountered app crash.

It's very easy to reproduce without any of my code involved.  Do a "Monkey C: New Project" for a watch face, and add the Swim2 as a target device and others (I used a fr45) to compare,

Swim2 crashes, others run fine.

This seems to be a bug in devices for the Swim2. Not in the code or the sim itself