Overlay blend broken in 4.11

[ekosporttour]

Hi Assam, in version 2.11 overlay blend mode Multiply works different than in version 2.10, i assume in 2.10 it was correct.
I used satelite as base and osm vector as overlay.
White areas in Multiply were transparent, but are no longer.
I downgraded to 2.10 and immediately saw it fixed.
Please use automated tests, thank you in advance if you fix it.

[Menion]

hello. sorry for this. problem already reported and solved, more here https://getsatisfaction.com/locus/topic ... aps_broken