Unit conversion bug on temperature profiles

[Raptord]

Describe the bug
The x-axis on the temperature profiles graph can become bugged from what seems like a unit-conversion issue. Based on the change between the normal and bugged axis, it seems like in the bugged axis, Celsius values are being interpreted as F (32°C -> 32°F), then converted to °C (32°F -> 0°C).

To Reproduce

1. Set Beestat to use °C
2. Go to the Analyse Tab, then, under the Temperature Profiles' menu, click "More Info"
3. Close the More Info popup
4. Go to the Detail tab
5. Return to the Analyse tab
6. The x-axis on the Temperature Profiles tab should now be bugged

Screenshots
Normal x-axis:

Bugged x-axis:

gif showing how to reproduce: