Investigating possible bugs takes time and effort, don‘t expect a reply to every github issue within three days.
Constabularies have recently been changed, this might have caused a bug. It will be checked. The other modifiers to Spy Resistance have not been changed in the recent updates.
The chance to kill a spy is now slightly reduced compared to previous versions, this was done to make up for the fact that now, when a spy is killed, its mission no longer comes into effect.
On a more general note, the Espionage system is still in the middle of a rework, and there are active discussions on how parts of it, including the capture/kill system, can be improved. In the next session there will probably be some proposals on the topic.