Hi David,
That looks like Bz15270
https://4js.com/en/support/issue/?id=15270I'm not sure why this would not have been corrected in the 2.21.10 maintenance release, it is correcetd for 2.30
As a workaround, add either STRETCH=Y or STRETCH=BOTH to the textedits, in your case STRETCH=Y looks better IMHO.
Reuben