Hi. In Liferea 1.10.0 it is not possible to set “Default feed refresh interval” to 0 anymore (I could do this in 1.8.15). The minimum is now 1. Please re-enable 0, to mean that the feeds should not be updated automatically.
Thank you for reporting this!
I fixed it. Seems to be caused by the upgrade to GTK+3. Now one needs to explicitely set 0 as minimum range (as 1 seems to be default).
Will be released with 1.10.1
Fix released with 1.10.1