Cannot resize comment box when a new comment is created on top. The resizing affects the bottom right corner. This issue is dependent on how the comment is added if comment 1 is highlighted and a new comment is made and wraps all of comment 1, this issue does not occur. This issue can also affect the click and dragging properties of comments.
this issue occurs in 4.14.3, 4.15.1, and the 4.16 preview 1 binary build of the engines.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-44446 in the post.