This likely is an oversight but pressing the arrow that would usually bring up the “Rebyte”, “Share” and “Flag” options. When you’re in comment view pressing the same arrow performs a different function and automatically brings you to the “Encoding” share function. Pressing the three dots brings up the “Rebyte”, “Share” and “Flag” sheet. This function should be applied to the arrow and those three dots removed to avoid confusion of the same icon having different functions.
I hope that the GIF above goes some way to demonstrating the issue.
I have no idea why the GIF appears so small please follow the link below for the MP4 screen recording