Starting with the release of Strategy ONE (March 2024), dossiers are also known as dashboards.
STEPS TO REPRODUCE
1. Create a new Dossier in environment with Library.
2. Create a grid with metrics.
3. Apply custom formatting using "'"(apostrophe/single quote), i.e.: [<1000]#,##0;[>999999]##0"'"##0"'"##0;##0"'"##0 - it works properly in Web
4. Save the Dossier and share it to the Library
5. Open in Library - formatting is applied ('Metric 2').
6. Access through Library Mobile app from an iOS device: custom formatting does not work.
ACTION
Currently this issue is being reviewed by Strategy for a potential code fix on an upcoming Strategy release.
KB441667
