I am a big fan of the labels that you can add to monitors, apps, etc to group and filter items but I have notice some quirks.
In APM only the first letter of a label will be capitalized, so Environment:NFT becomes Environment:Nft, however this is not the case in the Monitors labels.
If you have an existing label and want to add another which is similar but shorter, it will select the existing label and not let you add the shorter. So if I had Group:ProductionWeb and wanted to add Group:Production then the Group:ProductionWeb will automatically be selected.
Are we looking at undocumented "features" here?