SMS history gets chronologically misordered when close to each other

Using up-to-date Manjaro beta10 on Pinephone 3GB, Spacebar is at version 21.12

In order to test SMS functionality, I am chatting with my own modem, as described in [1].

Steps to reproduce the issue:

ask for modem FW version by sending "version"
modem answers instantly, modem's message is correctly displayed as last
get back to conversation list, my own "version" message is shown in the conversation list preview as the last
get into the conversation with modem, last two messages are now swapped (answer is shown before the question)

Expected behaviour: message sent/received last to be shown on the bottom of the conversation