Misguiding file extension (apparently creating .ASS, but interior is .SRT)

[cuentacuentoscaminantes]

In portable windows version. It had occurred that within the file created, type .ass, containing "actors" data, was showing and producing changes inside tero like "normally", being closed and reopened several times, saved as "newer version of proyect", just fine. A day after, every .ASS file won´t contain ANY "Actor" data, Tero won´t display this data (it does contains the subtitles created)... Opening it in notepad, shows it is actually a Srt-style data, contained in a .ASS file type.

Desktop (please complete the following information):

• OS: [e.g. Windows 11]
• Version [e.g. 1.0.0.1]

Additional context
This is not regular. It happened, but doesn´t happen allways.
Thanks for the work. Great Software you are developing