Changing the value of any $kendo-font-size-xx variable breaks the project

[NickIliev]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce

Steps to reproduce the error:

1. Create a new project (Font icons, Q4 2025 latest, Bootstrap)
2. Click on "Project setting".
3. Click on "Metrics".
4. Change:
   $kendo-font-size-md: 0.875rem
   $kendo-font-size-sm: 0.75rem
   $kendo-font-size-xs: 0.625rem
5. Close project settings.
6. Now the project is broken.

Crash in javascript console:
index-BTReSqML.js:464 Uncaught _P: There are errors in SASS and it cannot be compiled to CSS.

Actual Results
The project crashes and can no longer load at all. Backend errors in the console.

Screenshots

Components technology and version
TB Q4 2025

Additional context
Reporteed through t.1705226

[NickIliev]

Temporary solution:

1. Export the broken metadata project
2. Open the metadata file and delete all variables from the $kendo-font-size-xx family that have a modified value. The variables have a modified ID that does not follow the syntax of the original unmodified variables (refer to the screenshot for example).