Weird issue: zero-line missing from *graph objects.

[gc-user]

I encountered a weird issue.

I copied my conky conf over to another system, same distro, same conky version (1.22.2), same output when started from terminal.

After adjusting the entries for devices / sensors to pull data from and installing fonts to get rid of the good old '6x10 font' missing error everything seemed like it should - except for one thing: all of the *graph objects are missing their zero-line / baseline / x-axis or whatever the correct term is for the line that is always visible even if there is no data for the graph to display.

I'm talking about cpugraph, diskiograph_read, diskiograph_write, downspeedgraph, upspeedgraph.

On the "source system" they all have the "zero-line" I've come to expect, on the "recipient system" they all are missing that line and look just weird, esp. if there is no (constant) data to display.

Is there anything I can check what might be missing on the new system to make it look "normal"?