The filter empty text is not being shown when canceling the text entry.
How to reproduce:
1 - Select the company column, then go filters, and then click in the field (marked correctly with Enter filter text...)
2 - Don't type anything, and just click outside the grid, so it will lose focus, and the menu will close.
3 - Go once again to the company column, filters.
4 - The empty text is not set
The problem is that when hiding the menu it gets removed from the dom. You cannot blur something that is not part of the dom. To really fix this there are big changes needed that cannot be done in a minor version update. Its not only a problem with the filter. Its with any field in any menu.