OK, I reproduced it. The text filter is overwriting the alpha channel on its output.
The workaround is to create a V3, put a transparent color clip on V3 (File > Open Other > Color), and add the Text filter to the transparent color clip.
Well that is rather intuitive Dan. Sorry but the default hash #00000000 at a glance is just like html #000000 which indicates it would be black. I always set the Alpha channel to ‘0’ to get transparent.
Maybe the default state should be made clear (excuse the pun) by indicating ‘Transparent’ instead of #00000000.
Just a friendly suggestion from a muddle headed dumb as a sack of hammers average user.
It’s only black in the preview window. Drag it to the timeline, it’s transparent.
I tested this to confirm it.
Otherwise use the ‘0’ method for the Alpha channel as I descrobed before, this also works.
If it fails for you then you are not understanding something or applying it incorrectly.
After you set the Alpha channel are you pressing ‘OK’ ?
It will ‘appear’ white in the preview screen but dragging to the timeline will be transparent.
No special settings, it just works - even in the very latest version.