The bond between two Functional Group abbreviations dissapears

[Zhirnoff]

Steps to Reproduce

1. Launch Ketcher
2. Paste this structure:

Ketcher 12162215312D 1   1.00000     0.00000     0

  8  8  0  0  0  0  0  0  0  0999 V2000
   10.3670   -6.7750    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   11.2330   -6.2750    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    9.5008   -7.2755    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    8.6340   -6.7753    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.7639   -7.2781    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.7703   -8.2780    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    8.6336   -8.7739    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    9.5001   -8.2732    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0     0  0
  3  4  2  0  0  0  0
  8  3  1  0  0  0  0
  7  8  2  0  0  0  0
  6  7  1  0  0  0  0
  5  6  2  0  0  0  0
  4  5  1  0  0  0  0
  3  1  1  0  0  0  0
M  STY  1   1 SUP
M  SLB  1   1   1
M  SAL   1  7   1   3   4   5   6   7   8
M  SBL   1  1   1
M  SMT   1 Bn
M  END

3. Select 'Bn' from the 'Custom Templates' -> 'Functional Groups' list, and click on the methyl group
4. Look to the bond between two Functional Group abbreviations
   Note: If you expand the abbreviations, then the bond is in place. The bond disappears only when the abbreviations are collapsed. Visual problem.

Actual behavior
The bond between two Functional Group abbreviations dissapears

Expected behavior
The bond between two Functional Group abbreviations does not disappear

Screenshots

2022-12-19_15h48_02.mp4

Desktop (please complete the following information):

• OS: Windows 10
• Browser Chrome
• Version 108.0.5359.125 (Official Build) (64-bit)

Ketcher version
[v2.7.0]

Additional context
Related issue: #2269
Related discussion: #2315

[Nitvex]

reproduced in v2.7.0-rc.9, moving this to v2.9.0-rc.1

[Zhirnoff]

Also if you click FG on another FG connected with atom - dissapear atom with bond

2023-02-23_18h52_24.mp4

[yuleicul]

Also if you click FG on another FG connected with atom - dissapear atom with bond

I guess this bug will be fixed in scope of #2269

[yuleicul]

This issue is reproduced in v2.8.0-rc.4, but on master branch it has been fixed in scope of #1990