Bug report #5679
reverting edit changes when hitting "close without saving" is quite slow
|Affected QGIS version:||master||Regression?:||No|
|Operating System:||Easy fix?:||No|
|Pull Request or Patch supplied:||No||Resolution:||worksforme|
|Crashes QGIS or corrupts data:||No||Copied to github as #:||15222|
It seems that it reverts back all the editing history step by step, not sure if it is possible to flush all the changes in one go.