tgeorgemihai , this fix only works in some cases, it worked with big tiles, tiles that even when exported were adjacent to eachother, this means they matched perfectly side by side top to bottom, i just needed to remove the transparent line between them, and they matched perfect, the problem you have when importing tiles in spritesheet, they get scrambled and different kinds are adjacent to other kinds, removing the lines will only have the effect of bluring wrong colors in each other,
if you work with tilemap it is different and wont work with linear period., its one texture splitted in multiple images without padding, so linear will make them blur on each other.
if you''re using sprites as tilemap and have an example of the tilemap, positioned, ready to test and export im willing to try and make adjustments, other possible solution is in positioning and making them overlap 1px, other than that its the usual, use point... blabla