I had this WASM crash when I tried to copy active FPLN into SEC3 while in cruise on a regional flight (VHHH-WSSS) at approximately half of the elapsed flight time; SEC1 and SEC2 had already copied from active.
To reproduce:
load FPLN from simbrief, then input a departure and arrival
get into cruise phase
copy active into SEC 1
fly for a few waypoints, then copy active into SEC 2
copy active into SEC 3
systems freeze
Info
A/c: A350-900
Sim: MSFS2020
Navdata: Navigraph
OFP: loaded from simbrief, then added departure/arrival
Specs: i5-14400F, RTX4070 super, 32GB ram
WASM: Exception c0000005 in gauge MFD in module vfs://inibuilds-aircraft-a350/SimObjects/Airplanes/inibuilds-aircraft-a350-900/panel/inibuilds-A350.wasm