I'm guessing someone has already reported this as it's been around for a while. Whilst spectating someone who has either a shotgun or bolt-action rifle, upon reloading, the reloading animation becomes stuck, and resumes even when the player resumes firing. I have taken a screenshot (though admittedly cannot really be proven in a screenshot):

0_1543274530907_20181126224935_1.jpg

Specs:

CPU: i7 4790k
GPU: GTX970 4GB
RAM: 32GB DDR3 @ 1866mhz
HDD: Samsung 840 SSD