Objects are rendered black or incorrectly when enabling transparency

[sabudum]

Computer specs:
Processor: Core 2 Duo 2.66 Ghz
Memory: 4GB DDR2 800Mhz
Graphics: Nvidia Geforce 9500 GT, 3Gb vram

Operating system:
Bodhi Linux 7.0 (Ubuntu 22.04)

Range Engine version: 1.5

Description of the problem:
Any object becomes black or renders incorrectly when transparency is enabled.

Video showing the problem:
https://youtu.be/iL97aCDToxI

Workaround for the problem:
Disabling Environment Lighting makes transparency work fine without issues. My guess is that internally there are too many shader instructions when everything is combined.