While I was doing a bit of testing of a new LibreNMS installation, I noticed when I mouse over the mini graphs the mouse over graphs don’t have consistent font sizes.
The LibreNMS demo is having the same issue. If you look at the device (even though it’s down) you can see when you hover over the mini graph for Memory Pools and Voltage, the title font size in the upper left is not the same size. The hover over Voltage font size is much larger than the Memory Pool.
Here is a link to the device: https://demo.librenms.org/device/device=193/
I tested it with Chrome and Edge, also I’m using LibreNMS version 1.33-89-g0c49e9b