Description of the problem
The issues was first reported by @ZMAlt in gmt-china/GMT_docs#691 (comment).
Using -BWSEN without -Baf, the basemap doesn't show annotations and ticks for a single plot, but shows them in subplot mode. Not sure if this is a bug.
Full script that generated the error
Single figure:
gmt begin test1 png
gmt basemap -R0/4/0/4 -JX4c -BWSEN
gmt end show

Same command in subplot mode:
gmt begin test1 png
gmt subplot begin 1x7 -Fs4c/4c -M5p/10p
gmt basemap -R0/4/0/4 -JX4c -BWSEN
gmt subplot end
gmt end show
