pcell rod handles have stopped working

I've been developing a pCell for a power grid in an advanced node. I had the top metal layers working, including a rectangle with stretch handles (see code).

After returning from a side assignment to continue working on the code, I now find that my stretch handles no longer work. They don't display and any attempt to stretch the pCell where the handles used to be only results in the entire instance being selected and moved (selected item stretch). The code below is a pared down version with the metalization work removed and the dimensions changed to protect the paranoid.

Just the stretch rectangle is there.

Does this code work for you?

pcDefinePCell(
;; library, cellName, viewType
list(
ddGetObj("myLib")
"testStretch"
"layout"
)

(
(tsWidth 10.0)
(tsHeight 10.0)
)

let( (cv)
cv=pcCellView

;; create a rectangle on text with x & y dimensions set by tsWidth & tsHeight
ts_rectRodObj = rodCreateRect(
?name "testStretchRod"
?cvId cv
?layer list("text" "drawing")
?width tsWidth
?length tsHeight
?origin list(0 0)
)

;; stretch handles
rodAssignHandleToParameter(
?rodObj ts_rectRodObj
?parameter "tsWidth"
?handleName "centerRight"
?stretchDir "X"
?displayName "width"
?displayExpression "tsWidth"
?updateIncrement 0.1
?shape "square"
) ; rodAssignHandleToParameter
rodAssignHandleToParameter(
?rodObj ts_rectRodObj
?parameter "tsHeight"
?handleName "upperCenter"
?stretchDir "Y"
?displayName "height"
?displayExpression "tsHeight"
?updateIncrement 0.1
?shape "square"
) ; rodAssignHandleToParameter

) ; let
) ; pcDefinePCell