I have a requirement to set a default tab in lightning. I have a tab named Home and I would like to set the Companies tab as the default but without the reordering i.e. home tab should be first, companies second and the default should be companies. I can't seem to find a way to do it without reordering it.
Try this one, if it works.
Create a new lightning app and select all the tabs you want to include but don't select home and save the app. Now open the app. You should see the default tab to company. Now edit the app and include home and keep it as a first tab.
I hope, your default tab should not change and you will see company as a default landing tab but home would be the first tab as you updated