Lags when selecting articulations, lines, etc. | Notes/Rests go invisible when moving their point.

Notes/Rests go invisible when moving their point if they're over moved too high/low. I can still find the notes after going to the Inspector and re-enabling the visibility of an object.
Hopefully this helps.

Also, I'm just trying to add a link to on the left corner of the first page like all of my sheets but it keeps pushing A SECTION of bars onto the next page and I can't even reverse it unless I close it and reopen the file without saving it.
I solved the problem by creating a new "object" at the end of a page then disabling the Automatic Placement in the Inspector.