I've now confirmed that the fix for bug 264599 fixes this bug too. This was because the usual suggested value (maximum available) didn't fit in the spinbutton range by GtkAdjustment's newly-enforced rules, so it ended up remaining at the old value.
I've now confirmed that the fix for bug 264599 fixes this bug too. This was because the usual suggested value (maximum available) didn't fit in the spinbutton range by GtkAdjustment's newly-enforced rules, so it ended up remaining at the old value.