liferea 1.2.16b finally solved power consumption issues (does not wake up too often anymore). Ebuild for 1.2.16 works fine. Reproducible: Always
Seriously, this version was released about _TWO_HOURS_ ago. Please let Daniel do his work in his own time. FYI, zero-day bump requests are considered rude behavior on Gentoo's bugzilla.
I am sorry, I really did not want to bother anyone, just wanted to give (somewhat) useful information. I am really sorry of sounding rude...
1.2.17 is in the tree.