Charts flashes with each item change

On the sitemap I show two charts:

Frame label="Letzten 24 Stunden:"   {   Chart item=gUGTechnik_Strom_Wirkleistung_W period=D     refresh=3600000     }
Frame label="Letzten 7 Tage:"       {   Chart item=gUGTechnik_Strom_Wirkleistung_W period=W     refresh=3600000     }

The item group gUGTechnik_Strom_Wirkleistung_W belongs to the group gUG

In the rrd4j.persist file I have

gUG*    : strategy = everyMinute

In the .items file

Number UG_TECHNIK_Strom_Wirkleistung_Gesamt_W   "Wirkleistung [%dW] (gUGTechnik_Strom_Wirkleistung_W)

Current Behavior

The Item UG_TECHNIK_Strom_Wirkleistung_Gesamt_W refreshes very often about once a second. Also the chart is flashing about once a second. I’m not sure if it’s depending on the item change, but it seems that the refresh time of 3600000ms (60min) have no influence.

It’s only flashing when I open the sitemap with habdroid (Android). When I open the sitemap in a web-browser, the chart is stabel.

I also found another discussion about that problem [https://community.openhab.org/t/chart-annoying-refreshing/5017]

Expected Behavior

I think the chart should be stable in the habdroid view like in the web-broswer view. It should refresh with the frequent of the refresh time (example 60min oder 30sec)

Steps to Reproduce (for bugs)

The problem is always reproduceable when open the sitemap with charts

Environment

On my system the following versions are running: openhab: 1.8.0 habdroid: 1.8.0.2

[Senfglasdichtung]

Well, I’m playing with openhab and the Android App less than a week now. And honestly this bug is absolutly annoying. Let the update of the UI/charts run every second, but why have the charts to be disappearing during that update?

[mueller-ma]

I cannot reproduce this anymore.