Common, yes.
But with the release of a new gameviewer this season (now using 1.4.2 instead of 1.4.1 which was in place for my Tuesday games), I thought it worthy of mentioning, instead of assuming it was 'normal'. It's the debugger in me. :D
Earlier in the game, I also had several goofy shot clock changes, but could not reproduce them on a refresh. By goofy, I mean the shot clock would change from :02 to :08 mid possession and :01 to :04, these happened all the first time I watched a game using 1.4.2.
After I refreshed, it is entirely possible it replaced a component in my cache that was legacy. Who knows. I cannot reproduce it again, so I will keep an eye out for other oddities.