Yesterday, I spotted an issue with total gain and it was not the first time. The problem looks to be when switching to the new day. In Belgium UTC+2, at local time between midnight and 1am, I saw total from dashboard was counting like just 1 bot (the btc one) while 2 from bybit (XRP and link) was also displaying gains but not counted in dashboard.
This is not expected and so should probably find a fix.
Probably related to DST, someone already reported it. The problem is that I cannot reproduce it locally. I added DST offset to chart data. Should help.