Hi Abdul,
I have spending some time to look into this issue and tracked it down in EasyDiscuss version 4.0.11?
The issue is caused by the preg_replace pattern in /administrator/components/com_easydiscuss/includes/string/string.php, line 368:
$patternReplace = '@(?<![.*">])\b(??:https?|ftp|file)://|[a-z]\.)[-A-Z0-9+/%=~_|$?!:,.]*[A-Z0-9+/%=~_|$]@i';
This pattern is causing text like: o.a. to be replaced with a link. But only if another link is already placed in the text. So:
https://stackideas.com/forums/unwanted-url-in-text some text and then o.a.
I'm not a regex expert, but I guess the pattern continues to the dot in the o.a. text.
Hopefully this helps you further fixing the issue for us.
Thanks, Sander Potjer
Edit after posting: see, happens on this forum too