plugin-manager: Kill window effects on destroy
We do so for all other window effects already. Why this was left out is unknow (cfa89ceb6b8a82ec), but we will need it for a fix in GS.
Related: #655 (closed)
We do so for all other window effects already. Why this was left out is unknow (cfa89ceb6b8a82ec), but we will need it for a fix in GS.
Related: #655 (closed)