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 Using Galv's Message Bust Plugin

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

Message Busts - DK Plugins

MV Message Busts Galv's RPG Maker Scripts & Plugins

RPG Maker MV Tutorial: Bust Graphics in Messages

MV Message Styles Galv's RPG Maker Scripts & Plugins

Additional and Conditional Random Encounter

RMMZ - BUST plugin?

MV Message Busts Galv's RPG Maker Scripts & Plugins