Connecting a light green and green input block into 2 separate vanilla AND gates such that the gates repeat their input 1 tick later. This pair of AND gates is then connected to a vanilla AND gate which is then connected to a light blue vanilla OR gate. Then the circuit block is connected into the two input blocks such that the direction of the connections face towards the input blocks from the circuit block.

https://steamcommunity.com/sharedfiles/filedetails/?id=2792093276

Expected behaviour
The circuit block should scan the described above circuit and emulate an AND gate.

Actual behaviour
When scanning the above circuit, the following debug output is logged;
15:24:46 (82876/47656) [Lua] [Information] [Host] Scan successful
15:24:46 (82877/47659) [Lua] WARNING: ---- Lua Error Traceback ----
[string "2289714402/Scripts/Shapes/Circuit.lua"]:187: in function <[string "2289714402/Scripts/Shapes/Circuit.lua"]:185>
[string "2289714402/Scripts/Shapes/Circuit.lua"]:164: in function 'server_createSimulator'
[string "Scripts/Graph/TopologicalSorter.lua"]:95: in function 'sort'
[C]: in function 'error'

The circuit block will disconnect itself from all input gates after clicking 'scan' in the interaction menu and will state it was scanned successfully to chat, however the above debug output suggests that the circuit emulator failed, seemingly at its initialisation.
The end result is a circuit block that does not respond to any input or output combination.