[Solved] 7.1.1 bug

Thank you @meken,

Please go to Dashboard > wpDiscuz > Style & Colors admin page, put this CSS code in the Custom CSS Code textarea, save it, delete all caches. When you check it on the front-end, press Ctrl+F5 to reset browser cache and see the result:

#wpdcom .wpd-comment-text img, #wpdcom .wpd-comment-text iframe, #wpdcom .wpd-comment-text video, #wpdcom .wpd-comment-text audio {
  min-width: 355px !important;
}

#wpdcom .wpd-thread-head .wpd-thread-filter {
  flex-wrap: nowrap;
}