When using pointFormat for tooltips, if you set they font size other than you set in style option. Space between 2 rows needs to be enough. (Not expecting overflow)
But it totally messes up. For in your own examples for activity gauge when you set the fontsize 32 you can see the problem.
Hi @HACKHERS thanks for reporting. This seems to be something that goes wrong with calculations of em values. It looks like it works fine using px values like this, which may be a possible workaround for you.
Internal Note: Look into SvgRenderer.fontMetrics. Simplified demo
Hi @jon-a-nygaard thanks for clarification, after opening issue I tried that too. It looks like much more space between serie name and point y. The example is over here. Is there anyway around this ?
Demo reduced to the renderer: http://jsfiddle.net/highcharts/rw86v1jb/
Fixed #5932, line height was wrong in tooltip with nested em units.
Regression, fixing #5932 caused error in the test for #2651.