Tonight We tried to finish up Karagga's palace hardmode 16 man. We did one attempt on Karagga and wiped. After the wipe everyone was forced to zone out and then no one could zone back in because it was saying we could not enter an instance while an encounter was in progress.
To fix this first bug we tried to reset the phase and zone back in, didn't work though. So we reformed the entire group, set it to 16 man hard and zoned in. The speeder was no longer there and the trash to bonethrasher had respawned. We decided to clear the bonethrasher trash and apparently the trash was set to normal difficulty, as well as bonethrasher. Before anyone says anything, the instance was definitely set to hard mode before anyone had zoned in. We even set it to nightmare mode, and had the exact same thing happen.
We also tried having someone else start the raid group and then zone in from there, for some people the speeder was there, for other it was not.
I know this game has a lot of bugs, but this was just a little bit much. We called the raid and hopefully a soft reset overnight will fix this.