An issue was introduced in the November release that means the Rename Asset option no longer works. This is accessed by right clicking on an asset.

This will be corrected in the next release but in the meantime the workaround is to left click on an asset and click the edit button (below) next to the Title field and update directly.

This has been addressed in the 0.3 release in December 2020 and assets can now be renamed from the right click menu once more.