Price saves but during load it gets changed

[kusmi]

Describe the bug
I updated the electricity pricing for the new year to 13.08 rp (0.1308 CHF). I save it and open the price sheet again. it displays 0.1308 for a split second and then changes to 0.1307. Also final price is off by 0.01 rp in the dashboard - so it looks like it does not like the number "0.1308" I tried others and they worked, just 0.1308 does not - funny :-)

To Reproduce

Bildschirmaufnahme.2026-01-01.um.21.33.23.mov

Expected behavior
the number should be accepted as expected

Screenshots
If applicable, add screenshots to help explain your problem.

Hardware information:

• Country: Switzerland
• Meter: Landis+Gyr
• Encryption enabled no
• AMS reader: the one not supported - so you can also discard this
• M-bus adapter (if applicable):

Relevant firmware information:

• Version: 2.5.5
• MQTT: yes
• MQTT payload type: JSON HomeAssistant

[ArnieO]

That's weird, @gskjold will look into this.