The flamethrower technology has a semi-transparent background over the entire area:
The rocketry technology has a weird bit with the shadow cast by the lower rocket, the shadow cuts off abruptly, but not at the boundary of the image:
[GFX] [1.1.34] Graphics issue with Flamethrower/Rocketry technologies
Re: [GFX] [1.1.34] Graphics issue with Flamethrower/Rocketry technologies
Thank you for the report, fixed for 1.1.36