Broken fullscreen in Vulkan only after flip changes

[CrabLugo]

Hello,
Since build rpcs3-v0.0.5-7387-a3d44b5e (last working rpcs3-v0.0.5-7385-35139ebf) there is a problem with fullscreen. When game starts in window, everything is fine, as long fullscreen is not enabled. When fullscreen is enabled, game stays in original resolution in top-left corner and is responsive, while rest of the screen is black (or white). When try to return to window, it will freeze in fullscreen, and after i press left mouse button on second monitor, game return to window original size with frozen frame from the moment that i doubleclicked.
If game is started in fullscreen mode (in settings) it will stay at black screen spamming (note this issue sometimes happens also when game is starting in window mode, just not everytime)
U {PPU[0x1000000] Thread (main_thread) [0x01de1038]} sys_prx TODO: _sys_prx_unload_module(id=0x2305b100, flags=0x0, pOpt=*0x0)
U {PPU[0x1000000] Thread (main_thread) [0x01de1038]} sys_prx TODO: _sys_prx_unload_module(id=0x2305b200, flags=0x0, pOpt=*0x0)
U {PPU[0x1000000] Thread (main_thread) [0x01de1038]} sys_prx TODO: _sys_prx_unload_module(id=0x2305b300, flags=0x0, pOpt=*0x0)
U {PPU[0x1000000] Thread (main_thread) [0x01de1038]} sys_prx TODO: _sys_prx_unload_module(id=0x2305b400, flags=0x0, pOpt=*0x0)

If game is started in fullscreen, with "Automatically load required libraries" (normally game is supposed to work with "load liblv2.sprx only" full screen works, but only when i don't try to doubleclick to window size, otherwise same bug occurs again.

This bug can be propably triggered in different games, but out of my lbrary, it happens everytime in Ni No Kuni: Wrath of the White Witch [NPUB30932] (although i was able to reproduce this issue in uncharted drake's fortune as well, happens very rarely there). There is no problem with OpenGl at all, only Vulkan.

Sounds continue playing all the time

Log using vulkan, build 7387, game started in window, libv2 only. 2 boots. First boot stucked with spam: {PPU[0x1000000] Thread (main_thread) [0x01de1038]} sys_prx TODO: _sys_prx_unload_module(id=0x2305b100, flags=0x0, pOpt=*0x0)
U {PPU[0x1000000] Thread (main_thread) [0x01de1038]} sys_prx TODO:
Second boot was fine.
RPCS3.log.gz

#5162 @kd-11 Culprit pinged!

[psennermann]

I have the same problem, also games keep on freezing/crashing when using Fullscreen

[CrabLugo]

Fixed by #5384