Description:
For example this formular may not be entered:

  ="repay loan funds, "&R[-7]C

Every attempt to enter this formula results in a field with value (contents) of:

   [repay loan funds,]

Where brackets are purely delimiters.

Steps to Reproduce:
1. select a cell
2. Type the following formula: ="repay loan funds, "&R[-7]C
3. Press enter -- Pop-up appears to edit /change formula
4. Press NO to keep what has been entered.

Actual Results:
formula is not entered correctly, no matter what option is chosen

Expected Results:
I was forced to change the formula content until I could come up with something calc would accept.


Reproducible: Always


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
[Information automatically included from LibreOffice]
Locale: en-US
Module: SpreadsheetDocument
[Information guessed from browser]
OS: Linux (All)
OS is 64bit: yes

$ glxinfo | grep OpenGL
OpenGL vendor string: nouveau
OpenGL renderer string: NVCE
OpenGL core profile version string: 4.3 (Core Profile) Mesa 18.2.2
OpenGL core profile shading language version string: 4.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.1 Mesa 18.2.2
OpenGL shading language version string: 1.40
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 18.2.2
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10
OpenGL ES profile extensions: