I explained this before directly to support, but maybe the community could share their opinion on this as well:

In the KE110 settings you can define the default behavior of the Hold Timer that becomes active when doing manual temperature changes on the KE110 hardware or in the app.

You can choose the default duration of the timer, the options are "The next Smart Control time block starts", "The set time reaches" and "You manully resume Smart Control".

My default is option one since it makes most sense to me when I'm going to bed early and I want to lower the Temperature sooner than the Smart Control Schedule would.

But sometimes I want to make changes that last shorter or longer than the next scheduled change and for that I tap the pencil symbol next to a running Hold Timer and set a manual time.

However, making changes like that to a running Hold Timer not only affect the active timer, but also change the default settings as well to "The set time reaches" with the number of minutes matching this the last manual change.

And for me this is not logical. When I edit a running Hold Timer directly from the main screen, this should only affect the current timer and not change the default setting. The default setting should only be changeable going into the settings menu.