Parity PoA authorities are not syncing

[fatihATtargens]

Authority sync not work correct.

I'm running a private parity poa network with verion 1.7.7 stable.
The following issue I get:

Stage 1 block verification failed for b4e8…ee34: Block(DifficultyOutOfBounds(OutOfBounds { min: None, max: Some(340282366920938463463374607431768211455), found: 340282366920938463463374607431768211456 }))

and after that the two authorities are not able to sync again correct.
In the following screenshot you can see that on of the authorities imports higher blocknumbers and then back again lower blocknumber (the lower numbers are the same like at the other authority and the hash values are correct too). But it never stops to do add first the wrong blocknumber and then the correct one. So my app doesn't work correct!
"wrong authority"

"working authority"

All other none authority nodes got the same blocknumber as in the second pic.

Thank you in advance for some help!

Best

Fatih

[debris]

@tomusdrw can you confirm that this is fixed in #7434 ?

[fatihATtargens]

Sorry but i'm not able to change the version of parity.

[tomusdrw]

@debris It's a similar bug that was fixed in previous release, but the cause is a bit different. We have identified it and working on a fix.

[fatihATtargens]

If you know the bug and the causes is there a workaround for it?

[tomusdrw]

@fatihATtargens Restart both nodes and they should reorganize (you can also use --reserved-peers option to make sure they sync with the correct chain). Also make sure that the time on both authorities are properly synchronized.

[fatihATtargens]

@tomusdrw thanks a lot! I'll give that a try and let you know if that works!

[fatihATtargens]

@tomusdrw the workaround doesn't work! The same error occures.