Please update the R language icon

The current R icon is a very old version

截图 2023-10-24 14-33-32

The new version icon is shown below

Can I unify the size of ICONS?

截图 2023-10-24 14-39-41

Wouldnt that be decided by your own icon theme ?

manjaro’s own theme Papirus-Adapta-Maia

There’s no such thing. Remove it and install papirus-icon-theme instead and create an upstream issue if still applicable.