This is extremely repeatable for me, so I'm wondering if I'm the only one having this issue.
I have the following bluetooth headphones which have a button on them to allow for pause, resume, skip next, and skip previous.
All of the functions technically work, but if I pause a song through my headset, there is about a 20 second delay where I can't resume the song from my headset. It's almost always around 20 seconds before it allows me to resume. I can pause and skip forward and skip backward without having any delay between the functions. It seems to be isolated when attempting to resume a song after pausing it.
Windows 10 Enterprise - 64-Bit
Spotify Desktop Version: 188.8.131.52.g80176796