Combination of webp-Usage + Extension fal_securedownload doens't work

[mschmitz89]

If I use fal_securedownload on an Apache web server and want to output an image as webp from a saved folder, the links are not encoded correctly. Instead of &, a & is generated in the link. nginx web servers seem to be able to cope with this wrong link generation.
If I switch off webp generation, the output works with fal_securedownload.
Likewise it works, if I create a direct secured link to the image without using the i:image viewhelper, which suggests that it is a problem with the picture extension and not fal_securedownload.

I am using:
TYPO3 12.4.26
fal_securedownload 5.0.7
picture 2.0.4

Thanks in advance!

[mschmitz89]

PS: Same conflict with output of Retina images from secured Folder.

Maybe it is a genearl incompatibility with EXT:fal_securedownload and EXT:picture?