Wikimedia Bugzilla is closed!

Using following Wiki content to reproduce the bug:
[=> Start <=] 
=== titel 1 ===
Equal signs within a PRE tag:
<pre>
================
</pre>

=== titel 2 ===
[=> End <=]

If you now click on "Edit" link of "titel 2" and add some text; e. g.
[=> Start <=] 
=== titel 2 ===
test
[=> End <=]

then this is the result:
[=> Start <=] 
=== titel 1 ===
Equal signs within a PRE tag:
<pre>
=== titel 2 ===
test

=== titel 2 ===
[=> End <=]

There seems to be a problem if title marks ("=") are used within <pre> tags.

If you have a big document and this error occurs the corresponding paragraphs get totally mixed and data gets lost.

Thanks for a fast reply in advance.