Comment 2 for bug 623928

hi,
thanks for links to explanations!
Solved.

Was not a problem of flowed text, as what appeared as text in the old file was line paths (converted from text).
The black box was hidden and unselectable, also with Edit, Find, ID='flowRoot' method.
The symptoms are really the same as with flowed text.

Anyway, I modified the file, copying&pasting all to a new file, but the line path (converted from text).
Then I added normal text (taking care not create flowed), and worked. I already updated image on Wikipedia.
thanks again for hints