From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:0.9.6+) Gecko/20011217 BuildID: 2001121703 When there are more than one tab in a window, closing a tab can cause another tab disappearing if it is the last one. We can see blank window instead. If we then open a new tab (Ctrl+T), the last two tabs appear again, so the tab we tried to close cannot be closed. Reproducible: Sometimes Steps to Reproduce: Try to open a lot of tabs and load various pages. Then close all but one. Actual Results: The last tab desappear. In fact, it is not closed, but invisible. Expected Results: Mozilla should leave one tab, and close the others.

dup of 107848 Wrong tab is closed when last but one tab is closed *** This bug has been marked as a duplicate of 107848 ***