Visual bug for tall dialogue boxes

[shin-gamedev]

Describe the bug
When using either color mode and dialogue boxes taller than 11 tiles inclusive, random tiles from the text buffer are shown. They are shown for approximately one frame when clearing the text between dialogue boxes within the same event.

To Reproduce
Steps to reproduce the behavior:

1. Set Color Mode to "Color + Monochrome" or "Color Only."
2. Add a dialogue event containing at least two boxes of dialogue.
3. In the event's layout tab, increase the height of the dialogue boxes to anywhere between 11 and 18 inclusive.
4. Run the game and repeatedly hit A to go through the dialogue. You may need to put the dialogue event in a loop so you can easily repeat the dialogue, as the bug isn't always visible, though it is consistent.

If required, I've attached my own minimal example project with ROM below.
Dialogue bug minimal example.zip

Expected behavior
Text should be cleared between dialogue boxes without random tiles showing.

Screenshots
If applicable, add screenshots to help explain your problem.

Platform (please complete the following information):

• OS Windows 11 x64
• App version 4.1.3