I have the following Bug in Teletext Mode (with every channel). I use the internal DVB-S interface. It occors randomly but very often (>50%)

Example: (page numbers are just to illustrate, it can happen with every page)
1. Videotext is starting with Page 100.
2. I press "up", Page 101 is displaying
3. I press "up" again, page 102 is showing up for just a few moments. (<0,5sec)
4. Page 101 is shown again.
5. the Page counter is running: 200, 300, 400 and so on.
6. Page 102 shows up.

This behaviour can also happen when I go directly to a page number..

I encountered this bug also with previous FW Versions.

Any ideas?