Today I suddenly have the visual editor in my comment field (reply) in mobile theme, i.e. only shows up on mobile devices. My comment field on desktop has no visual editor. I have no idea where that visual editor (TinyMCE) came and it disrupted the scaling in mobile theme (Jetpack) as it is not responsive. I checked all settings and could not find where is the problem. I deactivated Ultimate TinyMCE and even uninstalled it, however that wasn't the problem.
I am hoping to get some direction to find out the problem. Thanks.