And problem mostly not in Elementor. You simply have customization for
menu, this is why you have this width difference

I recommend to forget this. This is not critical and I watched many times
your site before I realize what you mean. I think nobody take attention on
this

I discovered that this issue of main menu moving left and right between pages loading is caused by a conflict of Elementor plugin and the Re-Dokan theme.  Is this something you can help me with to fix or must I ask Elementor?

See video clip to remind you of what happens between pages loading with main menu https://www.dropbox.com/s/qkb2vgeqskmq1tz/img_2417.mov?dl=0

I deactivated all plugins with only woocomerce and theme in place.  Menu does not move left to right.  With elementor activated again it starts problem.

Menu height is not the issue.  My question is the left to right movement of menu items on main menu bar between pages.  Watch the menu item "food:" when I click on the link to the shop page. It move 5 pixels to right. Then back to home page and it move 5 pixels back again.  Is this normal?

it shows me that you have always the same height 7 mm and I don't see any
issues

This video clip will illustrate. https://www.dropbox.com/s/qkb2vgeqskmq1tz/img_2417.mov?dl=0

I don’t see difference in menu positions on your screenshot 

ok thank, so it is normal that menu item vertical position will be slightly different depending on the page ?

Staging site has no cache plugin activated

Hi, can you please help me to determine what is causing a difference in my vertical menu position on different pages? and suggest way to fix?

To demonstrate I am using Stage site which is running same version of Rehub as live site.  Please refer to pictures.

On live site menu position jump around between pages but async CSS (parsing) may be causing that as you suggest.