Hello, I have had this issue for a while now but it is only now causing actual problems for me.
My issue is that when I try to rotate a part or model it has lost the snap to grid feature making it hard to make things precise while trying to build things. Here is a video of what I am talking about, Video link
Now, I have tried Googling it, I have also tried looking for other posts on the Devforum, yet I can’t seem to find anyone that has/had this problem. I don’t remember if I might’ve pressed a keyboard shortcut by accident as it started couple months ago by now. Let me know if there is anything else I need to include. Thanks for reading! 
And sorry this is my first post/topic thing so sorry if its formatted wrong or something likewise