Steps to reproduce:

1. in zabbix 6.0.41 create trapper item and trigger

   last(/maint_trig_test_sender/numeric.value)=1
   

2. configure some Media
3. configure actions with "If trigger not suppressed" to send the notification
4. run sender to make sure everything is working

   #to activate trigger
   zabbix_sender -z 127.0.0.1 -s "maint_trig_test_sender" -k numeric.value -o 1
   
   #Resolve the trigger
   zabbix_sender -z 127.0.0.1 -s "maint_trig_test_sender" -k numeric.value -o 0
   

5. run maintenance. when the host will be under maintenance activate the trigger and wait maintenance finish.
6. after maintenance finish you will not receive notification
7. remove "If trigger not suppressed" condition:
8. run again maintenance and activate the trigger
9. when maintenance finish you will receive notification
10. you can try the same with escalation step 1-1 or 1-0, behaviour the same.

Expected:
After maintenance finish you will receive notification in any case.