[Issue Report]: Rendering glitch with quest window overlay

[StrangerCreatures]

Operating System

Windows x64

DevilutionX version

1.5.5

Describe

If you complete the Poisoned Water Supply quest then replay the dialog from an active quest while standing near the river, the portion of river covered by the transparent dialog window will turn yellow again (but back to blue after the window closes).

To Reproduce

Complete Poisoned Water Supply quest.
Stand near the river.
Open the Quest window and select an active quest.
The water under the dialog overlay takes on its former 'tainted' appearance.

Expected Behavior

The water should remain blue.

Additional context

[glebm]

I wonder if this is already fixed in 1.6. We did quite a few changes to the palette / color cycling code in 1.6.

[AJenbo]

Indeed it works correctly in 1.6