Well, here's something you could try...

'From Squeak3.2gamma of 15 January 2002 [latest update: #4743] on 3 March 2018 at 9:02:03 pm'!

!PasteUpMorph methodsFor: 'misc' stamp: 'raa 3/3/2018 21:00'!
invalidRect: damageRect from: aMorph
        "Clip damage reports to my bounds, since drawing is clipped to my bounds."

        self == self outermostWorldMorph
                ifTrue: [worldState recordDamagedRect: (damageRect intersect: self bounds)]
                ifFalse: [super invalidRect: (self indicateCursor ifTrue: [self bounds] ifFalse: [damageRect]) from: aMorph]
! !

On 3/3/18 7:45 PM, Jeremy Landry wrote:

It was 'lumped in' with my earlier report, but inside 'playfield options' is 'indicate cursor'. Anything you move or resize with a playfield cursor leaves garbage everywehre. This was what i was using for testing out warpblt edits.

On Sat, Mar 3, 2018 at 3:23 PM, Bob Arning <arning315@comcast.net> wrote:

Which option is it that makes this appear?

On 3/2/18 1:42 PM, Jeremy Landry wrote:

Whatever code is common that scales morphs is being offset incorrectly. The first image shows the 'garbage' left behind by playfield indicator if that option is set. It seems it was only tested in 'holders' and thus likely not picked up during 'intended' use.