Swap channels audio filter bug

Shotcut AppImage 25.12.31 / Linux Mint MATE 22.3

The Swap Channels filter

the drop-down list is not filled properly

This filter depend on the number the channels the project has, but for 4 channels (Quad/Ambisonics) it has only Left/Right like 2 channels Stereo

1 channel (Mono)
Swap: inactive
with: inactive

2 channels (Stereo)
Swap: Left | Right
with: Left | Right

4 channels (Quad/Ambisonics)

Swap: Left | Right > like stereo
with: Left | Right > like stereo

Expected to have:

Swap: Front left | Front right | Left surround | Right surround
with: Front left | Front right | Left surround | Right surround

When 6 channels (5.1 surround) has:
Swap: Front left | Front right | Center| Low frequency | Left surround | Right surround
with: Front left | Front right | Center| Low frequency | Left surround | Right surround