R15b5 : Fusion : Shift Space & Node Delete bug (not working)

I haven't had enough occurrences to spot the pattern.

RESOLVE : FUSION TAB.

+) Select a Node => Shift SPACE.

EXPECTED_RESULT : Menu to to pop on the screen.
EVERY SO OFTEN : Nothing happens. (BUG)

Work around:
+) Reloading the PROJECT does not fix this.
+) Create a new database -> switch to it -> switch back ==> Fusion Menu (Shift space) works again.

AJ

EDIT : Adding the Second issue in the thread below as is is also fixed by the Work Around

Another symptom of this bug:

+) In FUSION tab -> you cannot delete a NODE.

Same solution as before.
+) Open a different RESOLVE database and return ... and FUSION works again.

AJ