Extreme Assault game Voodoo transparency glitch

[Makus]

Trying the 3dfx version of the game in PCem v17 and PCem vNext build 5e77f59f, I noticed that the shadow in the top left corner, the text boxes and the radar at the bottom have the transparency effect corrupted.
I found this thread on the subject : https://www.vogons.org/viewtopic.php?t=62853
I also tried the patches to update the game but the glitch remains.

3dfx mode:

Screenshot from 2023-04-27 10-37-38-min.png (244.79 KiB) Viewed 3258 times

Screenshot from 2023-04-27 10-37-54-min.png (268.19 KiB) Viewed 3258 times

Software mode:

Screenshot from 2023-04-27 10-34-39-min.png (190.96 KiB) Viewed 3258 times

Screenshot from 2023-04-27 10-34-49-min.png (227.63 KiB) Viewed 3258 times

Here my configuration attached.
Thanks for any suggestions.