I spotted this bug in 18.104.22.168 but realised that it persists in 3.18.2 after upgrading to the latest version.
The steps to reproduce it are as follows:
1. Open a graph, map some properties, lay it out
2. Try to select some elements via Tools->Select Elements
3. Turn the selected elements to a group via Grouping->Group
4. Close the file
5. Go to 1. This time, element selection of step 2 fails. No element is selected and you have to restart yEd to be able to re-group.
Am I doing something backwards or could this be a bug in yEd?
All the best
Thank you for your response. What I omitted to mention previously was that I discovered this while working with `graphml` files.
In any case, here is a sample file and here is the (almost auto-generated) property mapping.
The first time you go around the process of load file -> map properties -> search, everything works fine, but if you close the file and open it again (**without** restarting yEd), search does not appear to be working (the nodes do not get marked up and it does not seem to be just a point of updating the gui because if you try to group regardless, the group is empty).