Segmentation fault in 2021.08 "Fall Weather" (not happen in 2021.03 "Magnificent Mullet" release)

KOReader version: 2021.08
Device: docker emulator

Issue

When I build docker and view emulator via VNC. It crashes when app opens.

Steps to reproduce

Follow windows workflow in https://github.com/koreader/virdevenv
replace ADD https://github.com/koreader/koreader/releases/download/v2020.07.1/koreader-appimage-x86_64-linux-gnu-v2020.07.1.AppImage appimage to https://github.com/koreader/koreader/releases/download/v2021.08/koreader-appimage-x86_64-linux-gnu-v2021.08.AppImage
run the app. see the issue (the issue doesn't happen in 2021.03 release https://github.com/koreader/koreader/releases/download/v2021.03/koreader-appimage-x86_64-linux-gnu-v2021.03.AppImage)

`crash.log` (if applicable)

root@783f24c5c98c:/home/ko/squashfs-root# ./AppRun

            launching...

| |/ / | \ _ _ | | | ' / | | | |) / \/ ` |/ ` |/ _ \ '| | . \ || | < / (| | (| | / | ||_\/|| __|\,|_,|__||

It's a scroll... It's a codex... It's KOReader!

[] Current time: 01/08/22-07:06:06 [] Version: v2021.08

ffi.load: blitbuffer ffi.load: SDL2 ffi.load: SDL2 Starting SDL in /home/ko/squashfs-root/ Segmentation fault (core dumped)

crash.log is a file that is automatically created when KOReader crashes. It can normally be found in the KOReader directory:

/mnt/private/koreader for Cervantes
koreader/ directory for Kindle
.adds/koreader/ directory for Kobo
applications/koreader/ directory for Pocketbook

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crash.log

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koreader / koreader