weird behaviour when Change File Name is enabled.

[mehdipourfar]

System Details:

• Operating System: Linux
• Distro(For GNU/Linux and BSD users): Ubuntu Focal
• Desktop Environment(For GNU/Linux and BSD users): GNU
• Persepolis Version: 3.2.0
• How do you install Persepolis? sudo dpkg -i perspolis.deb
• Please attach log files if crash or paste error message

Issue Description and steps to reproduce:
Whenever I paste a url and Change File Name field is checked (which by default is), the program omits the first character of the title and the last character of the extension. So when I download some link like https://eu.cdn.cloudam.cc/dl/2/556543/368757/12176/51.255.213.184/xxxxxxxxx/series/the_sopranos/The_Sopranos_S04E01_10bit_x265_720p_BluRay_30nama_30NAMA.mkv, my downloaded file name will be named: he_Sopranos_S04E01_10bit_x265_720p_BluRay_30nama_30NAMA.mk