Currently using version 1.18.1-2 forge for the lucky block mod and setting doDropsOnCreativeMode=true in properties.txt in the lucky block config folder for 1.18.1-2 doesn't work either.

Tried it in my own add-on as well by setting doDropsOnCreativeMode=true in the properties.txt file for Lucky Block Pink, doesn't work there either.

Yes you're right - I've tried to add this back in, but with the latest versions of Forge/Fabric I don't think it's possible to change block break behaviour on creative. Sadly, I'll have to remove this feature and update the docs

the good news is that I'll replace this with doDropsOnRightClick=true in v11