Thread:Project:Support desk/display of a page differs from edit window of this page

I have a closed wiki named: testwiki The main page consists of two lines: line1 line2

Now I backup the database testwikidb through the command: mysqldump testwikidb > testwikidb-dump.sql

After that I make changes to the main page of testwiki adding 2 more lines, so the new contents is: line1 line2 line3 line4

For any reason, I have to restore the testwiki. After creating the database via mysqladmin, I restore the tables: mysqladmin create testwikidb mysql testwikidb < testwikidb-dump.sql

When I log in to testwiki the main page displays all four lines as shown above after having added the 2 more lines. This is certainly not what I expected to see. The backup was executed, when the main page consisted of only 2 lines. So after restoring that backup, only 2 lines should be the contents of the main page.

But when opening the editor of that main page, the edit window only shows the first 2 lines. This time it's exactly what I expect to see after restoring the tables.

I am very confused about the fact, that the contents of the main page simply displayed by mediawiki differs from the contents of the editor window of that same page. How can that be?

Is that a bug in mediawiki? Or a bug in mysql? I really don't know where to search for remedy.

Is there anybody kicking me in the right direction to the solution? Please help. Thank you.