When using Psql in Linux, if the result of my SQL query contains many columns or long strings of data, it will wrap the initial view and only once I scroll to the side will it s
probably you should use aligned format for output:
aligned
\pset format aligned
You can check all available formats to fit your needs:
\pset format TAB aligned html latex-longtable unaligned asciidoc latex troff-ms wrapped
Also you should check PAGER configured value in your environment
PAGER