We cannot open usual FASTA file and switch to Micromolecules mode, Application hangs.

[NadezhdaPeskun]

Steps to Reproduce

1. Switch to Macro
2. Click Open...->Paste from File
3. Select 'FASTA' and 'Peptides' from drop-down menu
4. Select FASTA file (see attachment file)
5. Try to switch to Molecules mode or select any icons

Actual behavior
We cannot open usual FASTA file in Macro mode and switch to Micro mode. Application hangs.
Kindly see FASTA file and pictures

• Macro: UI for Open/Save As FASTA #4146

Expected behavior
We should be able to open FASTA file in Macro mode and switch to Micro mode.

Attachment files:
protein_test FASTA.zip

OS: Windows 10
Browser Chrome
Version 112.0.5615.138 (Official Build) (64-bit)

Version 2.20.0-rc.1
Build at 2024-03-15; 15:36:45
Indigo Toolkit
Version 1.19.0-rc.1.0-g8cd9f1e27-wasm32-wasm-clang-12.0.0

[AlexeyGirin]

Check on 2.20 rc2 (Roman made improvment)

[AlexeyGirin]

If not fixed - re-discuss

[Zhirnoff]

Moved to 2.21 after discussion with @vanoprenko (doesn't look like a release blocker)

[AlexeyGirin]

Moved to Refined Backlog since not fixed over 1 release