If we have two Git repos Apple and Banana open in tabs in sourcetree, and they both reference a submodule Fruit in subfolders called Fruit. When we open the SUBMODULES menu and double click on Fruit it will open in a new tab with the title Fruit.

If we do this from both parent repos (or more repos) there is no indication which instance of Fruit these tabs are referencing. If we have multiple parent repos, all instancing different versions of the common submodule repo, this quickly gets confusing.

To solve this please prefix repos which have been opened as a submodule from another repo with the name of the parent repo. In the example above the tab title could say [{*}Apple] Fruit{*} or something similar.