2nd pic resized smaller on initial click

1st pic example (fine): https://gyazo.com/8fdeb26cc79ef0fb8aee7c045883f5f1

2nd pic example (not fine): https://gyazo.com/769789ff60b97b00fcbe93909827ca24

• it works if i click the left/right arrows back and forth

• sometimes centered, often top-left corner, fwiw