Macro: Unable to move sequence (on Flex mode) by holding Ctrl+grabbing single monomer is impossible

[AlexeyGirin]

Steps to Reproduce

1. Switch to Macro (Flex mode)
2. Load from file (unzip first) : Possible to drop selection.zip
3. Hold Ctrl button and drag any monomer (by pressing and holding left mouse button) and move it
   

Actual behavior
Nothing happens.

Expected behavior
System switches to Select Rectangle mode.
All monomers (and bonds) become selected while user grabbing it.
Sequence follows mouse cursor while user holding right mouse button

Versions:
Windows 10
Chrome Version Version 123.0.6312.106 (Official Build) (64-bit)
Ketcher Version 2.19.0-rc.2 Build at 2024-04-09; 09:32:33
Indigo Toolkit Version 1.19.0-dev.1.0-g9fa8cfe30-wasm32-wasm-clang-12.0.0

[MarinaKisacik]

The issue is reproduced.

Tested in Environment:

• Ketcher Version 3.17.0-rc.1 Build at 2026-06-02; 21:27:10
• Indigo Version 1.45.0-rc.2.0-g168fb85f2-wasm32-wasm-clang-23.0.0
• Chrome Version 149.0.7827.156 (Official Build) (64-bit)
• Win11