This issue has been fixed in newest patch (SPOTREP #00122).
Thank you Devs

Not this exact same bug, but another bug with holdAction is, is that when you add 2 hold actions to an object, 1 action will not have its action text.
1. Picture: The helicopter only has the custom Eject option
2. and 3. Picture: Was taken in the DAP Ghosthawk, it has both "Jettison Fuel Tank" and the Eject option.
The EJect option doesnt have its text shown tho, only the Jettison Fuel Tanks one