Regarding the deletion of all comment content during editing, on my end, I can replicate it in this manner.
From the "Add A Reply:" section at a bottom of a thread, I click Advanced Mode. I then entered some text in the edit box. Then I clicked the View Source button four times in succession, and the test text disappeared.
This is limited to Firefox, a similar test using Internet Explorer 6 did not lose the content of the edit box.
Now, how often will that happen, someone repeatedly clicking View Source in Firefox? Probably not often, but who knows what bit of info will be helpful to y'all! And it certainly could be a problem on my end, a Firefox extension or something..out of my league to speculate.
The following link will have been entered in this manner. I am in basic edit mode, typing this at the bottom of the thread, not on a separate Edit Page. I will click the Insert Web Link button, and paste in a URL. I do not know if this will replicate the mangling I experienced earlier or not. Link follows:
WWW LinkThis reply was typed in the edit box at the bottom of this page, and I will not attempt to re-edit it. https://forums.wincustomize.com/?aid=125136#1024885