Frame inside frame outline not showing

Hi. I am new to Figma and I am a bit confused. I turned the frame outlines ON but the frames inside my main frame (pink) don’t get the outlines unlike the frames without a main fram (white). Is it how it is? Do you have any tips

Hey there, thanks for reaching out!

It’s hard to be sure from your screenshot alone, but it looks like you have a frame selected in the main frame. Are you able to see its outline if you click onto the canvas instead of keeping that frame selected?