Deadlock while reading modern betaflight 3.2.2 file about blackbox-tools HOT 2 CLOSED

I just ran GDB on the file. I'm not a C expert at all, but it looks like the frameIndex is continually increasing beyond anything reasonable :-)

https://screenshot.tbspace.de/mrfcdsahojk.png

from blackbox-tools.

I got the same problem but on 3.2.0 . Strangely a log I previously recorded on the same system doesn't show this behaviour. Both from a Matek f405 mini. Only difference is the logging frequency: 8khz works, 1.5khz log freezes chrome app and blackbox_decode.

edit:
Well, writing this just made me check both files in detail. There is a difference in the header (line 19/20)
'H P interval:1/1
H P denom:256' in the good log,
'H P interval:0/1
H P denom:48' in the bad one. Editing these lines solved the problem.

Does this mean bf gave wrong instructions on how to read the struct?

from blackbox-tools.