The icons of the header of each window disappeared after upgrade the @blueprintjs packages

[rislam169]

Bug report

• Package version(s): @blueprintjs/core 4.4.1 and @blueprintjs/icons 4.3.0 (both are latest)
• Browser and OS versions: In all OS versions and Browser versions are facing same issue

Steps to reproduce

Please follow Code Sandbox

Actual behavior

The readme of the react-mosaic-component package states, that it can be used with the latest version of the @blueprintjs packages in order to provide a default theme, including icons for the header of each window (see examples in the readme file). However, when we have upgraded the @blueprintjs packages, the icons disappeared from the window headers

Expected behavior

The icons for the header of each window should visible properly.

[nomcopter]

You just need to set blueprintNamespace="bp4" in the root Mosaic's props - thanks for the tip though I'll update the README.