[FF] Incorrect cursor position on Backspace

[Irina]

To Reproduce:

1. Type some text and press Enter key
2. Hit Backspace
3. New empty paragraph removed & cursor goes back to end of the first paragraph
4. Press spacebar or type some text

Problem: Cursor moves to next line

[Piotrek Koszuliński]

I can confirm it. Regression after 4.2.

[Piotrek Koszuliński]

Fixed by #10812.

[Satya Minnekanti]

I could still reproduce the issue. Open Replace textarea elements by class name sample, select all the content by using Ctrl + A and press Delete or Backspace to delete the content. Repeat steps 1-4 mentioned in the description, we can reproduce the issue. Please re-open the ticket

[Piotrek Koszuliński]

Unfortunately I confirm this. This TC is very fragile and somehow I repeatedly tested it incorrectly on 4.2 and 4.2.2, confirming it only on 4.2.1 :|.

The TC has to be exactly this (no focus/selection changes, or additional keystrokes):

1. Open replacebyclass sample.
2. Click in editor, CTRL+A, backspace (once!).
3. Type something, enter, backspace.
4. Type something again.

Using these steps I was able to reproduce this issue at least from CKEditor 4.0.

[Olek Nowodziński]

Screencast for the ticket

[Jakub Ś]

With TC from comment:5 I was able to reproduce this problem from CKEditor 3.0 (Perhaps this is some new browser quirks/feature.) in both CKE 3.x and 4.x.

NOTE: I believe we had similar issue once #4964. In this case, this is what gets inserted into editor when you start typing in it <p>text<br /></p>. Once you hit enter and backspace cursor most likely is inserted after BR thus the result: <p>text<br />^</p>

[Jakub Ś]

There is very similar issue: #10209. I believe they both duplicate each other and can be fixed with one patch.

[Piotrek Koszuliński]

I wonder if #10966 and #10965 are not related too. Looks a little bit like a change in Firefox which caused all of them.

[Mike Gifford]

I can't repeat this problem in Drupal 8 following the steps indicated in the summary.

Would I be having trouble replicating this problem as I'm using a Mac?

[Piotrek Koszuliński]

I cannot reproduce this issue issue any more. Can you check it guys?

[Irina]

I still see the issue by following those steps:

1.Type some word, e.g. test

2.press Enter key

3.Type some word again, e.g. test

4.Press Ctrl+Z (or undo toolbar button) to undo the last step

5.Hit Backspace so that cursor goes back to end of the first paragraph

6.Press spacebar or type some text

[Marek Lewandowski]

Above issue and the one from the description is still reproducible with FF@Win7 and Mac. It's important to use new page button to clear the content.

If you'll use ctrl/cmd+a + backspace to clear the content then the issue is not reproducible.