Quartus Prime Pro: Adding signaltap causes crash

Here are more details:

Problem Details
Error:
Internal Error: Sub-system: STA, File: /quartus/tsm/sta/sta_graph.h, Line: 393
Bad fanin count: Old count: 3, Total count: 2, Level: 20. Node: [870315]<instance deleted from post by me>
Stack Trace:
Quartus 0x534f90: STA_NODE::increase_fanin_completed_count(unsigned long) + 0x270 (tsm_sta)
Quartus 0x631e5a: tbb::interface9::internal::do_iteration_task<QTL::parallel_do_chunked_no_serial_attempt<10, __gnu_cxx::__normal_iterator<STA_NODE**, std::vector<STA_NODE*, std::allocator<STA_NODE*> > >, STA_TRAVERSAL_MANAGER::do_clock_traversal()::{lambda(STA_NODE*, QTL::FeederProxy<10, STA_NODE*>&)#5}>(__gnu_cxx::__normal_iterator<STA_NODE**, std::vector<STA_NODE*, std::allocator<STA_NODE*> > >, STA_TRAVERSAL_MANAGER::do_clock_traversal()::{lambda(STA_NODE*, QTL::FeederProxy<10, STA_NODE*>&)#5}, STA_TRAVERSAL_MANAGER::do_clock_traversal()::{lambda(STA_NODE*, QTL::FeederProxy<10, STA_NODE*>&)#5})::{lambda(QTL::TBB_ITEM_GROUP<STA_NODE*, 10>, tbb::interface9::parallel_do_feeder<QTL::TBB_ITEM_GROUP>&)#1}, QTL::TBB_ITEM_GROUP>::execute() + 0x35a (tsm_sta)
Quartus 0x26bdd: tbb::internal::custom_scheduler<tbb::internal::IntelSchedulerTraits>::local_wait_for_all(tbb::task&, tbb::task*) + 0x75d (tbb)
Quartus 0x2064e: tbb::internal::arena::process(tbb::internal::generic_scheduler&) + 0x1ce (tbb)
Quartus 0x1f1cb: tbb::internal::market::process(rml::job&) + 0x1b (tbb)
Quartus 0x1babd: tbb::internal::rml::private_worker::run() + 0x4d (tbb)
Quartus 0x1bcd9: tbb::internal::rml::private_worker::thread_routine(void*) + 0x9 (tbb)
System 0x7aa1: (pthread)
System 0xe8c4d: clone + 0x6d (c)

End-trace

Executable: quartus
Comment:
None

System Information
Platform: linux64
OS name: Red Hat
OS version: 6

Quartus Prime Information
Address bits: 64
Version: 21.4.0
Build: 67
Edition: Pro Edition