I often use Cmd-Opt-L in Apple Mail to apply filtering rules to selected messages. Most of them time this works, but sometimes it brings forward, or launches, EagleFiler with an Import dialog. EF does have Cmd-Opt-L as its own shortcut, but it’s not related to import, and should not be triggering if EF is not frontmost.
Anyone else seen this? I’m on Mojave 10.14.6.