This worked for me. Thanks.
It's CSS (at least it always has been in my experience). Is your app public so others can take a look and possibly narrow down the specific CSS causing the problem?
Otherwise, I'd say you've got some trial and error testing ahead of you.
サインインしたメンバーは投稿、更新のフォローなどができます。初めてですか?無料アカウントを登録してください。
Find useful guides, FAQs, and documents to help you navigate and make the most of Esri Community.