Indeed, thank you for finding the problem. The issue seems more related to prettier than eslint. I have been able to keep the formatting as-is using <!-- prettier-ignore --> on their parent. Here is the diff:
Delphine van Rossummarked the checklist item Remove linebreak in chat message as completed
marked the checklist item Remove linebreak in chat message as completed
Delphine van Rossummarked the checklist item Change dark blue background color in own-message to make it lighter, light blue, grey or something else, but dark font on light background color as completed
marked the checklist item Change dark blue background color in own-message to make it lighter, light blue, grey or something else, but dark font on light background color as completed