[BUG] Uncaught TypeError: rawToolbar.replace is not a function

[gpashis]

I am getting an issue "Uncaught TypeError: rawToolbar.replace is not a function" from theme.js (Version: 5.0.7). This is only reproducible when we load on mobile environment. Desktop environment works fine.

Uncaught TypeError: rawToolbar.replace is not a function
at extract$1 (theme.js:10428)
at identify (theme.js:10438)
at Object.detect$4 [as detect] (theme.js:10536)
at Editor. (theme.js:14296)
at EventDispatcher.fire (tinymce.js:25608)
at Editor.fire (tinymce.js:25714)
at initEditor (tinymce.js:23786)
at tinymce.js:23900
at tinymce.js:4479
at tinymce.js:4136

[PeterRock]

    mobile: {
        theme: 'mobile',
        toolbar: ['bold', 'italic'],
    },

Add config can fix it temporary