KQ3 Redux crashes with "Error: SetTextOverlay internal error: inconsistent type ids"

[brainiac744]

I get a consistent crash when entering the cave containing the mandrake root.

To reproduce: enter the cave, pick up the mandrake root, talk to the person that appears.

A cutscene starts, and I crash to desktop with:

An internal error has occurred. Please note down the following information. (ACI version 3.6.0.25)

Error: SetTextOverlay internal error: inconsistent type ids

I've attached a savegame just outside the cave.

Here is the output of scummvm -v

ScummVM 2.6.1 (Oct 17 2022 10:09:38)
Features compiled in: Vorbis FLAC MP3 RGB zLib MPEG2 FluidSynth Theora AAC A/52 FreeType2 FriBiDi JPEG PNG GIF taskbar TTS cloud (servers, local) TinyGL OpenGL (with shaders)

I also tried a daily build yesterday and had the same problem - sorry, didn't note down the version of it.