Configurations: editing current config multiple times #4239
Description
There is a squish test that checks that the current config can be edited multiple times (by adding a block each time, 30 times). This test is currently failing on the build server complaining that the GUI is using too much memory at the end of the test.
Reproduced on a dev machine, java visual VM indicates that we are probably holding onto objects which we no longer actually need, so memory use increases as the current config is repeatedly edited.