This does not look like a screenshot from 2.43.0, in 2.43.0 there is no “… sent a message from another device”. Looks more like an old version affected by PSA: Known interoperability problem in chatmail core <1.160.0
Version 1.60.1 of desktop is available at Index of /desktop/v1.60.1/, it is not supported but if you don’t want to upgrade to 2.x and still be able to decrypt messages sent from 2.46+, it should work.
Since 2.x there is no such thing as “user has changed device” message in a chat, if your contact changes the key then it appears as a new contact.