RMMV - Galv's Message Busts plugin flickering

This bug happens with Galv's Message Bust plugin's latest version, and only when switching from the default text frame with a type of window background setting ("Dim" in my case) and the plugin's

Galv's Message Busts

RPG Maker MV Tutorial: Bust Graphics in Messages

Additional and Conditional Random Encounter

Adds visual novel style bust control for RPG Maker MV events.

Visual Novel Busts plugin for RPG Maker MV by Irina

RMMZ - BUST plugin?

Talking Character Busts!

RMMZ - Change Text box UI and some stuff

MV Audio/Visual Effects Galv's RPG Maker Scripts & Plugins

Galv's Message Busts, Page 3

RPG Maker MV Tutorial: Bust Graphics in Messages

MZ Character Shadows Galv's RPG Maker Scripts & Plugins

RMMV - Change to Galv's Message Busts (MV)