New key works with WS2P but not with POW ?

Yunohost - Duniter

When changing the key for a member key on a Duniter node (Yunohost server), it appears that the new key is used for WS2P connections but not for POW.

Rebooting the server and restart duniter seems to fix it...

Before reboot logs :

2020-06-09T07:13:04+02:00 - e[32minfoe[39m: Generating proof-of-work with 5 leading zeros followed by [0-5]... (CPU usage set to 60%) for block#329305 FKHT5Q
2020-06-09T07:13:08+02:00 - e[32minfoe[39m: [Ds1z6Wd8] ⬇ PEER Eu3cwXLM 329274-0
2020-06-09T07:13:08+02:00 - e[32minfoe[39m: [Ds1z6Wd8] ✔ PEER Eu3cwXLM 329274-0
2020-06-09T07:13:09+02:00 - e[32minfoe[39m: [Ds1z6Wd8] ⬇ PEER Eu3cwXLM 329274-0
2020-06-09T07:13:11+02:00 - e[32minfoe[39m: [Ds1z6Wd8] ⬇ PEER Eu3cwXLM 329274-0
2020-06-09T07:13:15+02:00 - e[32minfoe[39m: [Ds1z6Wd8] ⬇ PEER Eu3cwXLM 329274-0
2020-06-09T07:13:16+02:00 - e[32minfoe[39m: [Ds1z6Wd8] ⬇ PEER 5fPevx21 329274-0
2020-06-09T07:13:16+02:00 - e[32minfoe[39m: [Ds1z6Wd8] ⬇ PEER 5fPevx21 329274-0
2020-06-09T07:13:16+02:00 - e[32minfoe[39m: [Ds1z6Wd8] ⬇ PEER 5fPevx21 329274-0
2020-06-09T07:13:16+02:00 - e[32minfoe[39m: [Ds1z6Wd8] ✔ PEER 5fPevx21 329274-0

After reboot :

2020-06-09T13:22:54+02:00 info Matched 3 zeros 000E20A44C2A6DD78E1202432FD582EB535BCEB3A0CCE17EF9C877CDDD3D7255 with Nonce = 10099900000088 for block#288696 by Ds1z6W

2020-06-09T13:23:00+02:00 warn WS2P request timeout

2020-06-09T13:23:00+02:00 warn WS2P request timeout

2020-06-09T13:23:00+02:00 info Block resolution: 1 potential blocks after current#288695...

2020-06-09T13:23:00+02:00 info Block #288696 added to the blockchain in 281 ms

2020-06-09T13:23:00+02:00 info [done] worker c#0#w#1

2020-06-09T13:23:00+02:00 info Block resolution: 1 potential blocks after current#288696...

2020-06-09T13:23:00+02:00 info [done] worker c#0#w#0

2020-06-09T13:23:00+02:00 info No engine found the proof. It was probably cancelled.

2020-06-09T13:23:00+02:00 info GIVEN proof-of-work for block#288696 with 5 leading zeros followed by [0-5]! stop PoW for Ds1z6W

2020-06-09T13:23:00+02:00 warn The proof-of-work generation was canceled: Proof-of-work computation canceled because block received