Disable Things via MainUI not working in latest SNAPSHOT (30.08.2021)

[t2000]

I have just updated my openHAB installation to the latest SNAPSHOT: openHAB3-Distribution number 2477
see https://ci.openhab.org/job/openHAB3-Distribution/2477/

Unfortunately I cannot disable a Thing via the Main UI anymore. (Doesn't matter if the thing was created as a JSON file via the UI or text based via a .things file)

It works on the console, hence I think its a bug in the UI

openhab> things disable tradfri:gateway:ikeagw
tradfri:gateway:ikeagw successfully disabled.

The error I get is: "Error while disabling or enabling: Unsupported Media Type", see Screenshot.

I am using Chromium Version 92.0.4515.159 (Official Build) Arch Linux (64-bit)

[lolodomo]

Possible link with this API change from yesterday?
openhab/openhab-core#2469

[lolodomo]

@ghys : can you please check what content type you are using when passing the value.
I set it to text/plain in the API.

[t2000]

@lolodomo Bingo thats the issue:

openhab-webui/bundles/org.openhab.ui/web/src/pages/settings/things/thing-details.vue

Line 493 in cf9ae4a

this.$oh.api.putPlain('/rest/things/' + this.thingId + '/enable', enable.toString(), 'application/json', 'application/json').then((data) => {

The UI sends application/json.

But what should be the correct type now? Since its just a String the text/plain is probably correct, so it should be changed in the WebUI, correct?