A Google Docs Bug

Google Docs seems to have a bug with adding a center tab-stop. It's hard to tell what version I am using since Google doesn't show that anywhere. But I have tried this both as a regular Gmail user and as a Google Apps user.

This seems to happen only when adding a center tab-stop when a marked block (in my case, several list items), with one of the lines marked having a previously added center tab-stop -- It did not happen when that center tab-stop was previously added, nor did it happen after that center tab-stop was removed before this action is repeated.

Here is how it happens:

1. Add one center tab-stop in the first list item line;
2. Mark the list items;
3. Add a center tab-stop in the same spot (being at the same spot may or may not matter);
4. Immediately, you get the Google Docs error pop-up message in the middle of the window and the red error bar on the top (see screen captures below).

I have been able to reproduce this error in both Firefox and Chrome.

The work around seems to be removing existing center tab-stops. But I guess if there are many of them, that could get annoying.