I had reported this bug earlier (Eagle 6.5 on Debian 7.4, freezes on 'Esc' and on tool switch.).
I'm on: Debian 7.7 Linux deathstar 3.2.0-4-amd64 #1 SMP Debian 3.2.63-2+deb7u2 x86_64 GNU/Linux
ldd reports no missing libraries.
1. I click 'Add'->'Search' then select my part and place it on the schematic sheet (first Image).
2. I hit 'Esc' and the part-outline disappears but I don't get back my 'Add' dialog (second Image). Note that the 'Add' Icon is still selected, but clicking does absolutely nothing. The cursor shape is still a cross-hair.
3. I have to Ctrl-C and exit Eagle completely (third image).



