Workaround:
Install https://play.google.com/store/apps/details?id=com.visualcandy.stopwatchwearminilauncheripr
In tap action, watch - choose app, pick stopwatch launcher, instead of stopwatch and it will launch your stock stopwatch app.
"Workaround:
Install https://play.google.com/store/apps/details?id=com.visualcandy.stopwatchwearminilauncheripr
In tap action, watch - choose app, pick stopwatch launcher, instead of stopwatch and it will launch your stock stopwatch app. "