[[FF]] We can't delete/backspace chars after a sequence of actions

[Satya Minnekanti]

To reproduce the defect:

1. Open Ajax sample.

2. Type a single character 'a' and then press Backspace 2 times.

3. Press Undo or Ctrl + Z to get the character back.

4. Now try to delete the Character using Delete or Backspace

Expected Result:

User should be able to delete the Character using Delete or Backspace

Actual Result:

We can't delete the Character no matter how many no of times we press Delete.

We were able to delete the Character only when we type some new character

[Frederico Caldeira Knabben]

Confirmed with Firefox. Works well with IE.

This is clearly a browser bug. I'm sure we've faced something similar in the past.

Other than fixing it at our side, it would be useful to report it to Mozilla with a reduced TC.