I am testing the current SE V19 RC2 (Release Candidate 2).
I found a repeatable copy/paste SE stack error - when;
You perform a [1] pop dialog, [2] select, [3] copy, [4] paste operation
cycle - using the operation cycle [X] below.
----------- Bad operation cycle ---------------
Cycle [X] Pop - Select - Copy - Paste -> SE Stack error
[1] MDI Menu -> Search -> Replace (pops dialog)
[2] Select text in edit buffer window
[3] MDI Menu -> Edit -> Copy
[4] (a) Select Search for: edit box - (b) Clear any existing text - (c) Right Click - (d) Paste (Operation fails)
SE produces a stack error on operation cycle step [X.4.d].
Screen shots are attached.
Operation cycle [X] is executed with an open workspace - and an open file
in the buffer area.