It sounds like a data sync problem
From sepefeets silverfish thread
sepefeets;37784 wrote:If a misplay is caused by "data sync" then it means HR is reading the game board too quickly after doing something and then giving the bad data to SF. ie. HR is not synchronizing properly with Hearthstone. Almost all misplays involving temp buffs, deathrattle minions, and charge minions are because of this. HR tells SF that the buff/minion isn't there yet and then SF does what it can with the bad info. This is a HR bug and JoyAdmin is continually working to fix it.
You must provide a log of the bug if you want any help.
If you are using sepefeets silverfish then report it on his thread.
See the first post to see what info you should provide to help solve it, howevee since Eerie statue is quite a niche card I don't know if it will be solved.