I have implemented the workaround 2. But because the clipboard is set, the solution doesn’t work because after filter is executed I lost the focus on the table filter.
Note: The issue occurs also when you don’t add specific code to unselect or for enter in edit mode with key. You need just to activate the clipboard.
When you filter a column and you have a selected cell; when the table is filtered ,webix library also call the unselect operation and you lost also the focus on the filter.