In a dashboard I have a calculated field (metric C) creating a ratio C=A/B.
Although everything is set up to display as % (Metric settings > Data Type > Percent), from time to time I open the dashboard and the ratio appears as an integer, rounding the percent values either down to 0 or up to 1.
The weird thing: this seems to be chart-related, since I have a table and a time series chart with the same metrics side by side, and the table is not affected. Only the time series chart is.
The (only ?) fix to bring it back to show percentages is by editing the metric’s Data Type to what it already is: From Percent to Percent 
. Simply reloading the page doesn’t work.
The screeshot shows how it is supposed to be after the described fix:
Is this a bug o do I overlook another setting somewhere?
Best