Statistics png export has transparent parts when using zoom functionality of browser.

[juliankehne]

Describe the Bug

When using the zoom functionality of the browser (e.g. 90% zoom) and then exporting the statistics as a png parts of it are transparent.

Steps to Reproduce

1. Go to 'Statistics'
2. Zoom in browser (ctrl + mousewheel) (<100%)
3. Export as Png
4. Open exported png and see transparency

Expected Behavior

No transparent parts in the png no matter at what zoom level the browser is.

Actual Behavior

Transparent parts in png.

Additional Information

The png export looks change depending on the zoom level. From the testing I've done it has transparent parts only if the zoom is smaller than 100%.

Traceback

Related Issues

Was part of this before:
#3266

[osmers]

Need to decide soon if we want to drop png export, if not, then keep issue. Otherwise close issue.