Black space appears in message windows/string pictures when transparent color used in Window Color slot.

[Goburinbro]

Thank you for supporting EasyRPG Player.
Before creating an issue, please verify that your bug still occurs in the "continuous builds" of the Player.
You can get them at the bottom of our download section: https://easyrpg.org/player/downloads

---

Please fill in the following fields before submitting an issue:

Name of the game: test projects

Player platform:

Windows x86 & x64 continuous build

Describe the issue in detail and how to reproduce it:

Black space appears in text boxes/string pictures when the SYSTEM image in use has transparent color in the upper left section/window color section
(the RPG_RT version is meant to look "incorrect" here as well, but for different reasons)

[Mimigris]

Seems to be a duplicate of #2961