Board Thread:Bug Reports/@comment-25550759-20190527201533/@comment-25550759-20190529045217

MilkMC wrote: Having insufficient RAM available has been known to cause textures not to load. Your resource pack is increasing the texture size by a factor of 4, so it is not unreasonable to assume that you would need more than the recommend 2 GB to use your resource pack. If you aren't able to do this yourself, then perhaps you should give it to someone else to see if it works with more RAM. I did try allocating 3 GB, and the texture still did not show up. Also, I disproved that the resolution has anything to do with this bug. I created an alternative test pack that had only the vanilla particles.png in it, with the only change being the color of the flame particles, and it still did not register. Note also that I did again test this temporary pack in vanilla 1.7.10, and it functioned perfectly.

If the resolution of the pack were really an issue, I doubt it would only affect particles. Besides, the pack, while higher resolution, is still only 32x32 pixels, and while not all of my computer components are super powerful, I am still running on a gtx 1070, and a computer build that can run Assassin's Creed Odyssey at max graphics with no hitches.

I think it's safe to say that this glitch is mod-related, and not client-side.