Insert table in Alloy Editor is not working in Firefox

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X
• Fix Version/s: 7.0.X, 7.1.X
• Component/s: Frontend Infrastructure
• Labels:
  • ee-7.0.x-only
  • ee-7.1.x-only
  • ee-ts
• Fix Priority: 4

Reproductions steps:

1. Use Alloy Editor as a default editor
2. Start 7.1.x
3. Login as admin
4. In Content -> Web Content create a Basic Web content, all settings are the default
5. Write some text into the content field and press Enter
6. Insert a table (in my tests it was the default 3x3 table)

Expected behavior:
The table is inserted after the text and able to edit, add columns and/or rows.

Actual behavior:
The table is inserted above the text
On 70x the table toolbar is not working

Reproduced on 7.0 with de-81-7010
Reproduced on 7.0.x.Commit: d0b1b62b371a38ebe36c9fa950d0d6421349a196
Reproduced on 7.1.x
Reproduced on 7.1.10 with dxp-12

Master: the same javascript error occurs, however the issue is not reproducible. no functionality loss.

It's only reproducible with Alloy editor

JS error In the console:

Error: Permission denied to access property "nodeType"
ckeditor.js:410:272
TypeError: s.getChild(...) is null