DVB subtitle bugs in Topfield 7700 HDPVR

[Bobben]

The transparancy control in the DVB subtitle CLUT tables bitmaps is not handled correctly by
the receiver. The receiver seems to convert all tranparancy modes into
either no transparancy or full transparancy. This reduces the quality of the DVB subtitles
as transparancy control is used to make the fonts more smooth.

Here is an example of a correctly decoded DVB subtitle:
http://www.satellite-calculations.com/D ... ecoded.JPG

This is how it is displayed from Topfield 7700 HDPVR:
http://www.satellite-calculations.com/D ... ncybug.JPG

On some HD channels the transparancy coded background is simply not displayed. Then it looks like this:
http://www.satellite-calculations.com/D ... cybug2.JPG
(it actually looks far worse on a HDTV connected to the Topfield)

[miri]

The same bug appears in the TF5XXX series, but no one at Topfield cares about it. Even minor manufactors of STB and PVRs can handle transparancy in subtitles. I admit that my TF5000PVRt is very stable, but i can't understand why Topfield can/will not fix this bug?