Print Icon in V13 compared to V12

In V12 if you wanted to see a print preview you just pressed the printer icon and pressed it again to end print preview.

In V13, why does the Printer icon disappear when print previewing. The only way to end print preview in V13 is press the back button.

Any help?

I may found and issue with Naming Series, could you please try to replicate? Before I raise an issue at github.

Setup 3 different naming series for any doctype, like Quotation.

To go back to docktype view after print, you can clic on series name

But I found that if the series was setup using "/" the link is broken

I have more than 10k documents named with a series using /. Could any developer, please, take a look at code and pull a fix?