On master page spread, items get applied to the wrong page
Say I have a two-page master, with facing pages turned on.
And say I have a rectangle spanning the top edge of my left page, and say the right page is empty.
When I apply this master to a right sided page (thus using only the right side master), the left rectangle will be rendered onto the left page, even though it shouldn't (as the rectangle belongs to the left handed master, which isn't applied).
This happens when the rectangle is touching the spine, and it's probably rendered by indesign as being part of the right master.
This happens even when the reference point of the rectangle is changed to be on the far side (with regard to the spine).
This is usually fixed by moving the rectangle a point away from the spine, but from searching online it seems like it doesn't always fix it. Moreover, this "fix" is still bad and serves as a bad-practice patch.
This appears to exist for a few years now, and all the answers to this topic are "we released an update", that obviously didn't solve the problem.
THIS. I have to spend way too much time creating extra master pages and applying them to avoid this specific issue.
If I drop an item on the left page and a single pixel is visible on the right page, then if I apply the right page only that pixel should be visible, not the entire left image.