Why does the "Output format" capture option not affect the file format?
In version 4.4.8 (v4.4.8-0-g0d289c003bfb), the final format of the packet capture file in the "Capture" --> "Options" --> "Output" tab depends on the suffix of the file name, and the two optional options for "Output format" (pcang|pcap) are invalid.
Just tested with Wireshark-4.4.8 on MacOS (ARM). I can not find an issue. What OS are you on? And can you provide the exact steps to reproduce the issue you are facing?