As far as I know, this bug has been happening for a few years. (I don’t know exactly how long, but it sure has been a thing since early 2018)
Reproducing the bug is pretty simple. All you have to do is upload a low resolution image to roblox. And then if you go to the image in the studio toolbox or the roblox website, the image may get bugged.
Hi, thank you for the report! We recently rolled out a speculative fix for this that applies to all newly uploaded decals - if you see any of these issues on decals uploaded after October 6th, please let us know.
Hello. Just wanted to bump this topic as the bug is still occuring and has really taken up most of my images as I scroll through most of my pixel art assets.
What exactly do you mean by “fix”, exactly?
I have been working on a roblox game and have been developing an info bot that uses info from the game itself, it takes pet images from the api based off given asset ID; I reuploaded an image THREE times and still no luck, the bot just displays distorted images instead of the actual pet image:
It’s bad, really bad, way worse than it was before. Previously; only previews were affected, now? The entire API is screwed over, especially happens when you upload images with a huge range of transparency or low resolution images, like the Ghost image that’s used as an example;
Hi @Ethanthegrand14. We deployed several fixes that target problems with previews recently (last one was enabled last week). Unfortunately, it does not seem they will help with your specific case. Could you please confirm that you still encounter this issue with assets uploaded as late as the end of last week or this week?
Still happening now! This bug is really annoying! The preview is only broken when on the actual asset website, when viewing from the decal library, there’s no broken preview
I can confirm I am also having this issue and that it is still occurring. I have several decals that have completely distorted. This is problematic as I need to fetch these as a thumbnail through game code.
perhaps the issue is images with transparency? most my images have transparent backgrounds, but have colour, so I think its an issue with images with transparent sections
I’ve never seen it happen to an image with colour in it, only black/white/grey, but if that’s the case for others then it is possible the only connection is transparency.
It might have something to do with it being 512x512, having transparency, and being 8-bit. And in the develop tab it shows normally except for the fact that the background is black and the strokes are green.
Incorrect colours (bright green/pink instead of transparency/whites): Carbon texture - Roblox - Also cropped to circle Images/Rotaru window sticker - Roblox - Also cropped to circle, and asset page shows a corrupted image Rust2 - Roblox - Green on preview, and completely invisible on asset page HKS 1 - Roblox - Pink background on preview, corrupted image on asset page Grocery List - Roblox - Green on preview, cropped to circle on preview, corrupted image on asset page CrateDesign1 - Roblox - Pink and green on preview, cropped to circle on preview White shift light - Roblox - Pink background on preview, completely white on asset page gear_1 - Roblox - Green on preview, corrupted and cropped to circle on asset page ZiptieBnW - Roblox - Green on preview, also cropped to circle on preview (it’s hard to notice, but the bottom right dot is missing) BooSTIn - Roblox - Pink and green on preview, also cropped to circle Boost Inside_White - Roblox - Pink background on preview, corrupted on asset page Multi Cursor - Roblox - Green and circle on preview, corrupted on asset page loading wheel - Roblox - Pink background on preview, corrupted and circle on asset page
Some notes: There’s a LOT more than this, but I’m too lazy to go through my hundreds of created decals to get them all just for this thread, so I collected a sizable portion of them as proof these bugs are very widespread.
The asset page images are the ones that show up in the studio toolbox (so if that’s corrupted, that’s what gets reflected in studio.)
Decals seem to work fine in games/studio otherwise though, which is what matters for the most part.
If a previews colours are messed up (pink/green) the asset page image tends to be corrupted, this is probably not a coincidence.
As some other people in here may have theorised, it seems that no, it’s not limited to just low resolution images (there’s a wide range of resolutions/ratios out of these) however it seems like images that are completely greyscale or have exclusively one colour have a habit of getting the pink/green bugs. The circle bug doesn’t discriminate though, and will just affect whatever it feels like.
Quick edit: I felt this decal was so exceptional I had to pick this one out to show how badly messed up everything is.
The preview is incorrect colours and cropped to a circle, and on the asset page it’s outright corrupted as well as being a circle again
Something that recently changed with this bug though is that Image asset thumbnails now also receive broken thumbnails. I took a break from developing for school so the last set of grayscale image assets I uploaded were around September 25 - October 1, 2020, and their thumbnails are not broken. An image uploaded on December 28, 2020 however was broken.
I ran through a bunch of test images today to see if PNG parameters / header information affected the issue at all, and it did not. The only thing that mattered was that the image be grayscale and have transparency information.
An important detail to note is that Images that get broken thumbnails retain their dimensions - rectangles stay rectangles. Decal thumbnails however are always square by design. There doesn’t appear to be stretching artifacts on the broken decal thumbnails, so the broken thumbnails must be generated after the dimensions for the image are set.
