Posts are doubled on public timeline

Installation type: From source
Pleroma version (could be found in the "Version" tab of settings in Pleroma-FE): 2.0.50-1096-g1fa7aa9f-develop
Instance: blob.cat

Some posts on public timeline is repeating twice.
This doesn't happen with TWKN.
On Pleroma-FE everything is fine, but Web Console shows the problem.

0 and 1, 4 and 5, 6 and 7 are the same.

Edited May 31, 2020 by a1batross