I can not add or modify columns in the edit region. I used to be able to do this. Right now I can only edit column information from the "Column Properties" on the right side. When I double clicking, nothing happened. My friend has the same version on the Chrome browser (Version 68.0.3440.106 (Official Build) (64-bit)) but he can use this feature. Can you help me?
By the way, this feature works in the Opera browser.
Note: How to add or edit a table? I know this article, it doesn't help me.
Customer support service by UserEcho