@bsc Supposedly this issue is going to be fixed in the next update, but if you don't want to wait until then, there is a workaround you can apply. If you're comfortable with editing the registry, you can force Shrink to Fit on always.
I'll mention the usual warnings about the registry: Be careful making changes- things can break easily, and hard; make sure the thing you are trying to add or change matches exactly- many things are case-sensitive. Make a backup first.
In this case, it's fairly low-risk to edit the registry and add the key you need here (it's a user key, instead of a machine key so you won't need admin rights).
Open the registry, and go to Computer\HKEY_CURRENT_USER\Software\Nitro\Pro\11.0\Settings\Preferences\PrintSettings.
If PrintSettings does not exist, please create it (New Key).
Inside PrintSettings, please add a new String Value, and call it kPagePrinterScaleSelector.
Double-click on your new string value, and enter in one of the following values:
/i 0
(No page scaling)
/i 1
(Expand page scaling)
/i 2
(Shrink to fit)