I found this bug recently, and there seems to be very little evidence of it in Internet.
I have the last versions of WordPress, Chrome, and WinXP. When editing a post in Visual mode, if I write normal text, all is well, and if I change to HTML mode and back to Visual, all is fine too. But if I click the bullet list (or number list) button in a paragraph, the bug is reproduced: the path at the left bottom corner of the editing box says “Path: ul li span”.
This additional span has a style that sets the size of the font to 13.3333px !!
The formatting, as seen in the HTML mode, is:
And if I undo the bullet list (or number list), it becomes:
The real nasty things about this bug are:
- It doesn’t show up in Firefox (the most common default browser among web developers)
- It’s pretty common, but almost nobody noticed it
- It shows up when doing/undoing a bullet list or a number list
- The bug adds ghost spans, one per item, that you must remove manually
- And manually means manually in HTML mode, because in Visual mode, the “Remove formatting” button usually removes too much formatting
- The bug is so strong that if you remove the ghost spans and then undo a list, the same number of ghost spans are added back again
- If you don’t remove the garbage as you go, it gets messier and messier, because the ghost spans start to appear also where never there has been a list
- I wasn’t able to find where the bug comes from: a search of all WordPress code returns nothing interesting
I’ll look at my theme and plugins code.
For now, it’s a filed bug.