Jenkins LTS 1.532.1
BlameSubversion plugin 1.200

Creating two freestyle jobs, A and B.
Settings in A:

• Post-build Actions:
• - Trigger parameterized builds on other projects: build "B" without parameters
• - UpDownStreamNumberSychronizedNotify, number = 10

Then trigger A manually. Build of B does not start.
Log (A #3):

Building remotely on Slave1 in workspace C:\build_jen\workspace\A
B #30 is already in the queue
Notifying upstream projects of job completion
Finished: SUCCESS