Running a game, closing it and opening a new one often crashes retroarch. (Longstanding problem)

Description

This has been a problem for over a year, now when using SLANGV shaders and VULKAN drivers.
I am very keen to help solve this and will provide whatever information / logs are required to do so.
please just tell me what you need! I've reported this previously and it never gets any comments or feedback,
but there is definitely a problem - something is loading/unloading incorrectly!

Expected behavior

Run a game. Open quick menu, close content, return to main menu. Load a new game, have it run successfully.

Actual behavior

Run a game. Open quick menu, close content, return to main menu. Load a new game, Retroarch attempts to run game, then crashes out. Upon reopening game does not appear in history playlist.

ALSO - In the case of mupen64 after running an N64 game and trying to open another, Retroarch refuses and gives an error message saying loading content failed.

Steps to reproduce the bug

1. Run a game
2. Close a game
3. Open another game

Bisect Results

I think this has been happening since SLANGV shaders and Vulkan were implemented.

Version/Commit

1.9.2

Environment information

Windows 10

Start by reproducing the three-step sequence on Windows 10 with Vulkan drivers and SLANG shaders using RetroArch 1.9.2. Check whether loading a second game after closing the first crashes or reports loading content failed, and whether the game is added to the history playlist. Logs or a bisect are not included, so further investigation is needed to locate the failing component.