Focus issuce on tinymce at a topic page.

hi,

I have dicovered a focus issue at the tinymce on a topic's reply and new topic.

This is mobile issuce.

The step when I discover it is below.

1. login at the mobile (I use iphone 11)

2. move a forum topic page.

3. click the reply button.

4. irregularly focus is on the toolbar. focus is not on textarea. When I touch the screen, no focus on textarea.

5. When I refresh the page, the problem is solved. So I always refresh the page addionally.

I think that this issue occur in first opening page.

Can anyone help me?

Thans.