[NOTE] newline insertion on paste bug in gedit

Intermittent bug: 

gedit inserts newlines on paste under certain conditions involving the contents of the search buffer.

gedit --version reports

gedit - Version 3.28.1

from the command line on Ubuntu, uname --all:

Linux {machine-name} 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Looking it up, it might be something inherited from the GTK toolbox.

Specific details.

Searching through a text file for lines beginning with a specified string, such as a label in an assembly language source file. Leaving the search string in the search buffer, select, copy, and paste a section of several lines of text including the searched string. 

gedit inserts blank lines (newline character sequences) before occurrences of searched string.

Example:

MESS    DC.L    DOCOL,WARN,AT,ZBRAN
    DC.L    MESS3-*-NATWID
    DC.L    DDUP,ZBRAN    ; -DUP here is a bug from the original 6800 model, at least.
    DC.L    MESS3-*-NATWID
    DC.L    LIT16
    DC.W    4
    DC.L    OFSET,AT,BSCR,SLASH,SUB,DLINE,BRAN
    DC.L    MESS4-*-NATWID
MESS3    DC.L    PDOTQ
    DC.B    6
    DC.B    'err # '    ; 'err # '
    DC.B    0    ; hand align
    DC.L    DOT
MESS4    DC.L    SEMIS

with \nMESS in the search buffer.

But then when I tried it with 

* This should add two 64-bit numbers:
ADD64STK:
    MOVEM.L    (A6)+,D7/D6/D5/D4
ADDLO    ADD.L    D5,D7
ADDHI    ADDX.L    D4,D6
    MOVEM.L    D6/D7,-(A6)
    RTS

it quit inserting the newlines, even in the original example text.