Just evap tested un#u glue r#mover that I bought a while ago and it leaves a residue, pretty sure its not a reaction with anything on the glass. Presumably the plastic from the bottle its in. Shame as it evaps very quickly.

Digg#$s she@$ite seems better but again leaves a white residual outer edge stain. Also came from a plastic bottle.

Second test was a bit better, washed the dish with sodium carbonate and water beforehand  then rinsed it thoroughly and air dried, mopped the small streaks up with tissue paper. It still left a faint white residue.

Will test diggers iso next.