"Problem" may be an exaggeration. Nuisance, perhaps.
When I attempt to insert tags in a post by clicking one of the buttons above the text field, and I have not already selected what I want inside the tags, they will appear in a different place from where the cursor was when I clicked the button. Sometimes they'll just appear on the line above where they were supposed to, other times they'll select a random block of existing text and do weird things to my post if I don't notice in time. This started happening around the time the wordcount thing was added so maybe they're related somehow? I don't know anything about coding, or if this is happening to anyone else for that matter.