When using a single cursor, the auto-complete function is working as expected. The problem arises when multiple cursors are being used (for example in column mode):

E.g. it seems that when typing a row of characters like this:
e
e
e
e
the auto-complete function scans for words made by at least four "e" (four is equal to the number of active cursors).
Moreover, in case of a big number of multiple cursors, the auto-complete form is subject to a noticeable flickering, as is it was called in a loop for each of the cursors:

In my opinion the correct behavior of the auto-completion would be to propose suggestions as if only one cursor was active, even in multi-selection mode. By doing this, flickering would also be avoided in case of a big number of multiple selections.
This is unfortunately a very annoying behavior because auto-completion is almost unusable when recurring to multi-selection, which is used a lot. Do you think this could be classified as bug to be fixed?
Software/OS:
Notepad++ v7.5.9 32bit
3P - Progress Programmers Pal v1.8.3
Windows 10 x64
Thank you