Those 3 or 4 times may have been after Google had updated their anti-adblocking stuff and before uBlock Origin had updated their anti-anti-adblocking stuff.
Also, do you have any other adblockers installed? Does your browser have its own adblocker? Either of those can cause interference with stuff like this.
I mean after clearing the cache it disappears. But I’ve seen the “your video player will be blocked” 3 or 4 times during the past few months maybe.
Those 3 or 4 times may have been after Google had updated their anti-adblocking stuff and before uBlock Origin had updated their anti-anti-adblocking stuff.
Also, do you have any other adblockers installed? Does your browser have its own adblocker? Either of those can cause interference with stuff like this.