Uncontrolled subfield moved to read only box when linked "MARC Authority" has the same subfield indicator

Overview: The uncontrolled subfield of "MARC Bib" field is moved to read only box when the field of linked "MARC Authority" has the same subfield indicator.
Steps to Reproduce:
Scenario 1:

1. Log into Snapshot FOLIO environment as User with the following permissions:
   MARC Authority: View MARC authority record
   quickMARC: View, edit MARC bibliographic record
   quickMARC: Can Link/unlink authority records to bib records
2. Open editing window of following "Instance" record via quickmarc:
   "Britain's contribution to détente : the Conference on Security and Cooperation in Europe, 1972-1975."
   (need to import the attached ".mrc" file: "MARC_Bib_240Tag(cooperation)_with_t.mrc") 
3. Check the value of "240" field:
   "$a Conf on Security & Cooperation in Europe $c H. Finland"
4. Click on the "Link to MARC Authority record" icon placed next to the "240" MARC Bib field.
5. Find the imported "MARC Authority" record by following heading value:
   "Conference on Security and Cooperation in Europe (1972-1975 : Helsinki, Finland). Final Act English"
   (need to import the attached ".mrc" file: "MARC_Auth_Finland_111tag_with_t.mrc")
6. Click on the "Link" button.

Expected Results:
the linked and updated "240" field of "MARC Bib" record displays:
In the Fourth box: ** "$a Final Act $d (1972-1975 : $l English" (read-only).
In the Fifth box: "$c H. Finland" (editable)
In the Sixth box: "$0 http://id.loc.gov/authorities/names/n83130832" (read-only)
The Seventh box is empty.
Actual Results:
the linked and updated "240" field of "MARC Bib" record displays:
In the Fourth box: ** "$a Final Act $c H. Finland $d (1972-1975 : $l English" (read-only).
The Fifth box is empty.
In the Sixth box: "$0 http://id.loc.gov/authorities/names/n83130832" (read-only)
The Seventh box is empty.

Scenario 2:

1. Log into Snapshot FOLIO environment as User with the following permissions:
   MARC Authority: View MARC authority record
   quickMARC: View, edit MARC bibliographic record
   quickMARC: Can Link/unlink authority records to bib records
2. Open editing window of following "Instance" record via quickmarc:
   "A pilgrimes solace / John Dowland."
   (need to import the attached ".mrc" file: "MARC_Bib_240_with_all_possible_subfields.mrc") 
3. Check the value of "240" field - It contains the letter indicator subfields and digit indicator subfields, which could exist in 240 field according to linking rules.
4. Click on the "Link to MARC Authority record" icon placed next to the "240" MARC Bib field.
5. Find the imported "MARC Authority" record by following heading value:
   "Dowland, John,"
   (need to import the attached ".mrc" file: "MARC_Auth_Pilgrimes_100_with_all_possible_subfields")
6. Click on the "Link" button.

Expected Results:
the linked and updated "240" field of "MARC Bib" record displays:
In the Fourth box: only letter subfields indicators with updated values ($a, $f, $h, $g ,$k, $l, $m, $n, $o, $p, $r, $s) according to linking rules.
In the Fifth box: $d PASS (editable)

In the Sixth box: "$0 http://id.loc.gov/authorities/names/n80030866" (read-only)
In the Seventh box: only digit subfields indicators with NOT updated values ($1, $2, $6, $7, $8) according to linking rules.

Actual Results:
 the linked and updated "240" field of "MARC Bib" record displays:
In the Fourth box: letter and digit subfields indicators are displayed ($a, $d, $f, $h, $g ,$k, $l, $m, $n, $o, $p, $r, $s, $1, $2, $6, $7, $8) according to linking rules.
The Fifth box is empty. 
In the Sixth box: "$0 http://id.loc.gov/authorities/names/n80030866" (read-only)
The Seventh box is empty. 

Additional Information:
See attached screencast for clarification.
See the linking rules for linking (240 to 111) and (240 to 100):

The described issue could be reproduced for any MARC Bib field.
Interested parties: kgambrell , Denys Bohdan