Query: Is model=CD32 functioning correctly?

[giantclambake]

I'd actually stumbled across some oddity wrt CD32 emulation before ...see #1377 ... at the time, I thought it to be an isolated example, caused by the fact the intro anim was very different from the layout of the title itself (game assets), so I just left 'sleeping dogs lay' as the expression goes --- now I just found this example, and it very much looks like a bug...

To recreate:

Download & unpack this CD32 title -> http://ftp2.grandis.nu/turran/FTP/TOSEC-ISO/CD32/Commodore%20Amiga%20CD32%20-%20Games%20-%20%5bISO%5d/Kang%20Fu%20(1996)(ALTER%20interservice%20-%20Greed)%5b!%5d%5bAmiga-CD32%5d.zip

NOTE: This title ran very poorly with the base CD32/2mb+8mb '020 machine type -- the 2 beginning splash screens were 'shimmering' like these were being displayed in a hires interlaced mode, and once the game menu screen appears, music is totally broken and graphics very bad, with these images appearing much smaller than the emulation window itself...(odd). I figured the best idea, was to first see if I could tweak amiberry settings, to get this title running 'properly' --- this is the resultant config.uae file I used, that addresses all these problems...

Kang Fu (1996)(ALTER interservice - Greed)[!]CD32.uae.gz

With the above configurata done (and Kang.Fu.1996.ALTER.interservice.-.Greed.CD32.uae is in conf/ ), I start the emulation by double-clicking on the Kang Fu (1996)(ALTER interservice - Greed)[!]CD32.cue file icon --> this works as expected, with amiberry direct loading the .cue file, loading in the associated config.uae file, and starting the emulation immediately....

• CD32 bootscreen comes and goes...
• the Greed splashscreen is displayed...
• the Kang Fu splashscreen is displayed...
• the intro screen and music starts... //lasts for a minute or so...
• intro screen & music dismissed, replaced with water-color image //load screen...
• water-color image is replaced, with scrolly Hi Score overlay, but the image is smaller and shifted, and graphics/music stutters badly...

• hit F12 key, pops GUI --> hit F12 key again to dismiss GUI and resume emulation
• water-color image, with scrolly Hi Score overlay is now correct size, and graphics/music working correctly

Expected: Hitting the F12 key twice should not be required to correct the graphics anomaly (which shouldn't happen in the first place ofc ;)

Indeed, I can't even imagine how the F12 key/GUI are participle here, but, there it is =)

Any ideas?...obscure bug of some kind?

TIA