id summary status owner type priority milestone 2638 Redraws slow down UI in Windows 10 new defect high HeuristicLab 4.0 2607 TabControl slows other controls and causes flickering assigned gkronber defect medium HeuristicLab 3.3.x Backlog 2979 Controls beneath a TabPage are excessively repainted when the TabControl is resized. new defect medium HeuristicLab 3.3.x Backlog 2980 Controls in the right panel of a SplitControl are excessively repainted when the splitter is moved. new defect medium HeuristicLab 3.3.x Backlog 3069 Race condition in AsynchronousContentView leads to exception and HL crash new defect medium