I’m not sure about the root cause, but it seems like libxcb bundled in efl-tools is incompatible with 17.04’s libX11 (1.6.4)

IDE doesn’t throw any error messages, edc editor just not starting. So I’ve tried to run it from shell:

$ LD_LIBRARY_PATH=./tools/efl-tools/lib:./tools/edc-editor/lib tools/edc-editor/bin/enventor 
> monitor dir /home/lev/.elementary/config/standard
> tools/edc-editor/bin/enventor: symbol lookup error: /usr/lib/x86_64-linux-gnu/libX11.so.6: undefined symbol: xcb_wait_for_reply64

Removing bundled libxcb solves the issue:

> $ mv ./tools/efl-tools/lib/libxcb.so.1 ./tools/efl-tools/lib/libxcb.so.1.bak