Material texture artefact on mobile platforms

Questions & Answers
1

Is it a bug? ver. 4.6.2f1

you can reproduce it:

  1. new project > android platform
  2. add new material
  3. add png, doesnt matter if square dimensions or rect
  4. see in prewiew for example on box, png is not filling whole side, but like 40% and on rest of it is like duplicating last pixels of eges od png
  5. change platform to standalone and preview is ok

used material for example on particle effect, and particles are with this artefact on play game preview, but after build on real device/android artefacts are not present, looks ok like on standalone

2

ok, self answer:
it is because sprites, have enabled “Generate Mip maps”

so can someone tell me what is the reason to have it enabled in Texture Type: Sprite (2D and UI)