And also I found out that it works with older 1.10.2 versions of optifine. Just the newest version of optifine doesnt work with your mod.
You can find a new version on the curseforge website. It adds compatibility with the latest version of optifine and support for all 1.9 versions. There is also a small visual improvement.
I certainly understand that this bug is not significant but just to let you know. how does the cursor with the texture packs (not standard)
This mod renders your crosshair exactly the same way like minecraft vanilla does but it changes the position its drawn at. I guess your resourcepack insn't excatly 100% transparent at your crosshair.
Is it possibly to fix the shaders and dynamic crosshair not liking eachother
Visit the curseforge page and download the mod on there. Those versions provide a fix for your issue and more features
But I am using the reloaded version
Please read the troubleshooting guidelines over on the shoulder surfing reloaded site. If the issue still persists open up an issue with a detailed description on shoulder surfing reloaded