For me MFCM still works with latest SH5 1.2 patch.Seen no problems so far.

Actually all my mods are still working.De-Installed all mods before patch,installed them again and started next mission from harbour.All fine,i´m a happy SH5 player!
Here my mod list in correct order:
AOTD_RDA_Beta_V1.03
No crosshair
Free Cam Tweak 1.1 - Narrow
Capthelms SH5 Audio Mod
Conus' Graphic Mod 1.0
AilSmoke 1.7
MightyFine Less Annoying Footsteps 1.0
Fix for digits (german speechpack)
Grossdeutscher Rundfunk
MightyFine Crew Mod 1.2.1 Alt faces
MFCM 1.2.1 OPTIONAL crash_dive workaround
Old Style Explosions V1.1
Reboot's Water Drips 1.1
Nauticalwolf's Poster Mod
AilClouds 3.0
RealSizeMoon
BRF 1.3 full
BRF 1.1 HP balance
Damage assessment
Haramirs Sensor Mod 1.1
AilClimateZones 1.0
Lite_Campaign_LC_1.2_-_GER
AilBubbles 1.0 Micro
AilRain 1.0
Detailed Caustics 1.0
NDB,NDH OM#1 - No Dialog Indicator