Post the following to Platform Feedback - Engine Bugs when the Post Approval ‘renovation process’ is finished.
Title: Trail.TextureMode.Stretch slightly wraps textures at TextureLength = 1
Thread: In the following gif you see a ball followed by a trail. At the end of the trail, you can faintly see that there is a line.
https://gyazo.com/88f0790212cd328ad47e058a301df34c
The line should not be there if the trail’s properties match what the title says, which is to stretch the image and to not go beyond the length of a single texture.
Here is the image used for the texture,
and here is the link to the image as uploaded onto roblox.com, which like all images seems to be displaying incorrectly on the site.
https://www.roblox.com/library/6012541720/Images-trail
For now the workaround our team has used is to make Trail.TextureLength less than 1, settling around 0.92 and changing the Transparency NumberSequence likewise.
You can reproduce the bug for yourself with the .rbxl file:
Trail Stretch Bug.rbxl (21.5 KB)