I wanted to add Bugs tag as well but it is so minor thing ...
So, just as the title says - price history chart tooltip's format is not defined in script, so the default one shows values by cutting down zeros. Right now no decimal, single decimal and two decimals are possible. If there would be an error somewhere else in the code, we can get prices like 1.23456 (probably very unlikely 🙂 but chartjs would accept that ).
