improvedFluidMultiplier config keeps reverting to 2.0 muiltipler

[Saereth]

Describe the bug

I've changed the improvedFluidMultiplier config option to 5.0 and defined a custom fluid tag. Everytime I launch however the config is re-written to a 2.0 (default) multiplier. The increased speed does work but only at a 2x multipler (Tested in game)

How to reproduce the bug

is the ae2 config and change the improvedFluidMultiplier to anything other than 2.0 with a custom fluid defined and it reverts on launch

Expected behavior

I would expect it to use my new value

Additional details

AE2: 11.1.4 Forge: 40.1.68 MC: 1.18.2

Which minecraft version are you using?

1.18

On which mod loaders does it happen?

Forge

Crash log

No crash