In global content categories, we have improved the edge-cases which include slots removal.
There were two issues with this:
1) The posts were not duplicated to all the categories even after the creation of the Global Category.
2) Slots were missed in the Global Category.
Let's assume you have scheduled three posts at 2 pm, 4 pm, and 6 pm. You delay your 4 pm post to another time.
Then you end up scheduling another post in this category, however, it used to get skipped! Now, after this improvement, your slot time will be saved just in case you have removed some slots.
Consequently, next time you publish content to the category, the time will be picked from the slot that you removed, before adding it to the last of the category queue.