WLED device not accessible when phone is connected to ESP AP and mobile network at the same time

[Kalrkloss]

When the phone is connected to an ESP AP and a mobile network at the same time, the app searches for devices on the mobile network, therefore the WLED devices are never discovered or accessible. Accessing the WLED devices with a browser on the phone is possible. When the mobile network is switched off, and the app restarted, access to WLED devices works.