Negative Temperature correction BME280 < 1degC behaves weird

[pe0ter]

My setup uses an SDS011 and a BME280 but the BME280 is a bit off on temp and humidity (cheap ali express) When I enter a temperature correction value between 0.0 and -0.9, the temperature displayed is corrected into the wrong direction. But using correction values -1.0 and larger, the temperature displayed shows as expected. These are my test results but room temp crept down 0.2 deg during test. 0.0 -> 20.7 -0.1 -> 20.7 -0.2 -> 20.8 -0.3 -> 20.9 -0.6 -> 21.2 -0.8 -> 21.4 -0.9 -> 21.4 -1.0 -> 19.5 -1.5 -> 19.0 0.0 -> 20.5

[MichaelManz]

I can confirm this issue on NRZ-2020-133/EN