Messages

If I use the dynamic setting the beer glass symbol displays as I wanted but when zooming ok the map doesn't display the "PH" abbreviation. If I set the map to just 1:50k the PH displays when zoomed in but again, not, when zoomed out to1:50k.

Yes, this is because all elements in the map only appear at a predefined zoom level and not before. This will depend on the map creator and the settings they used. For example with the latest OAM v5 maps bars and pubs appear at zoom level 17. They will disappear at zoom level 16 and lower, regardless of what the theme is defined to do.

You can usually find a file called tagmapping.xml where you download your maps from and this defines the "rules" for when certain items will be visible. The theme can also restrict when they appear too. Here is the entries for OAM v5 tagmapping.xml that affect the pub symbols in OS map theme:
   <osm-tag key='amenity' value='pub' zoom-appear='17' />
   <osm-tag key='amenity' value='bar' zoom-appear='17' />

For OS-Dynamic, the map theme uses the following zoom levels for both styles:
   - OS-50k for Z15 and below
   - OS-25K for Z16 and above

So what you have observed seems correct, if a bit annoying.
Personally I would like pubs to be visible much earlier. They appear at Z16 in LoMaps...
Hope that helps.