[Bug 52593] New: RPG Maker MV: Crash in bundled qt5webenginecore on project open

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52593

            Bug ID: 52593
           Summary: RPG Maker MV: Crash in bundled qt5webenginecore on
                    project open
           Product: Wine
           Version: 7.2
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs at winehq.org
          Reporter: zoe at milky.flowers
      Distribution: ---

Created attachment 71919
  --> https://bugs.winehq.org/attachment.cgi?id=71919
All output from wine-7.2-628-g2d0e84e6019 from launch to crash, with a default
project set

The program (RPG Maker MV Trial Version 161W) starts up fine and appears to be
stable if no project is loaded. However, within a few seconds of loading a
project or creating a new one, it crashes. It's responsive and appears to
behave normally within those few seconds (e.g. you can place new tiles and so
on). I get the vague impression that the crash is coming not from the main
thread but from the QtWebEngineProcess thread, although I'm not entirely sure
how to verify this. I didn't see the crash when running it with
`WINEDEBUG=+seh,+relay` and the output redirected to a file, which slowed the
program to a glacial crawl; either there's a race condition or the slow pace
extended the few seconds of crash-free time to several minutes. This is all
from a fresh 32-bit prefix dedicated purely to this program.

The program can be freely obtained from the vendor here:
https://dl.degica.com/rpgmakerweb/trial-download/RPGMV_161W_Setup.zip . The
filename is RPGMV_161W_Setup.zip, and its SHA1 checksum is
9ad63c92345ebc3236de1779f96af1575afa316f. 

I tried this with several versions of Wine. The most significant is probably
wine-7.2-628-g2d0e84e6019, which I built totally vanilla (`configure && make
depend && make`). However, I also tried using wine-6.23 (Staging), wine-7.2
(Staging), and wine-7.2 (i.e. stable) as built from Gentoo's official packages,
all with the same result. My partner saw the same behavior in Linux Mint with
wine-7.2 (Staging) from the wine-builds repository (that was how all this
began, actually).

Just in case anyone asks, I don't think this has anything to do with corefonts,
as I've installed the winetricks "allfonts" package to this prefix.

STEPS TO REPRODUCE:

1. Post-installation, run `WINEPREFIX=[PREFIX] wine 'C:\\Program
Files\\KADOKAWA\\RPGMV\\RPGMV.exe'`. The program should start normally.
2. If you're running it for the first time, there should be no default project
to open, so the application should work as intended.
3. Either open an existing project or create a new project.
4. Once the project is fully opened, wait a few seconds.

If you want to avoid having it open a default project at startup (e.g. if you
want to control when it crashes for logging purposes or whatnot), edit
`user.reg`, find the `[Software\\KADOKAWA\\RPGMV]` section, and change
`"projectFileUrl"="[PATH_TO_YOUR_PROJECT]"` to `"projectFileUrl"=""`.

ENVIRONMENTS:

Gentoo Linux, x86-64, vanilla kernel 5.16.10
Linux Mint, x86-64, kernel 5.13.0-32-generic

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