As the title says, the damage gets repaired in the pitstops even though you have set it not to do so.
To get this you however need to make changes to your setup i.e. decrease the wing angle by one from your F12 menu, before the pitstop.

So when you go in for a pitstop it first repaires the damages and only then makes the setup changes.

Same thing happened to me the other day when I tried to make an air pressure adjustment but didn't want damage fixed.

Presumably it has to fix the damaged wing before adjusting it...

Quote from dougie-lampkin :

Presumably it has to fix the damaged wing before adjusting it...

But does it need to fix the dampers when you wanna adjust the wing?

...

Damn these over zealous pit crews!

It must be the LFS pit system to fix ALL damage before adjusting something. I can see how it is weird to fix rear damage when you only want to adjust front wing angle, but maybe it can't choose what damage needs to be fixed?

IDK, I've never really thought of that...

We had a similar problem during the MoE 24h race... F12 - tyre change was set to ALWAYS and the 2 rear tyres hadn't been changed...Next lap - pit - it changed