Look at the Ninja page for Gothic II, a lot of people suddenly having issues, and we posted almost at the same time. I used "D36's All-in-one Patch" + systempack 1.8 (might not need) with the d3d11 mod and it works pretty good without Ninja, was able to load old save files. I guess avoid it until it gets fixed.

https://old.reddit.com/r/worldofgothic/comments/lhrdxo/how_to_run_gothic_i_and_ii_on_modern_systems/

I have the same

https://github.com/szapp/Ninja/discussions/37

I have the same

Not only flagging the steamworkshop version, the github version is flagged too.

Have same

Came to post the same. Ninja is flagged with trying to install adware: https://imgur.com/a/GltHDcg

I guess this is still a false positive...?

A code signing certificate was issued to help remove the false positive detection. Read more about it here and how you can support the project and incurring costs: https://github.com/szapp/Ninja/discussions/37

I have the same, even I can't play the game due to this issue.
I tried unchecking all the mods and the game works.
But trying to launch te game without Ninja shows a window telling that I cant do it.

bro I'm not giving you money for adware lmao
imagine trying to crowdfund for a $200 cert