I use Marginal Hacks Album program to generate photo albums. On their site (Album: Examples) is an example of a problem found in Chromium and Slimjet browsers while running Manjaro Mate or Cinnamon. Notice there are some thin vertical lines and the right side of each photo is slightly off.
This problem does not happen with Firefox browser.
On the same computer (changed hard drives), I loaded Linux Mint Mate with Slimjet browser and it renders these photos correctly.