diff --git a/asyncdispatch2/asyncloop.nim b/asyncdispatch2/asyncloop.nim
index 35c950e5..2d7e5884 100644
--- a/asyncdispatch2/asyncloop.nim
+++ b/asyncdispatch2/asyncloop.nim
@@ -522,7 +522,7 @@ else:
       let customSet = {Event.Timer, Event.Signal, Event.Process,
                        Event.Vnode}
 
-    # Moving expired timers to `loop.callbacks` and calculate timeout
+    # Moving expired timers to `loop.callbacks` and calculate timeout.
     var count = len(loop.timers)
     if count > 0:
       var lastFinish = curTime
@@ -542,6 +542,7 @@ else:
       if len(loop.callbacks) != 0:
         curTimeout = 0
 
+    # Processing IO descriptors and all hardware events.
     count = loop.selector.selectInto(curTimeout, loop.keys)
     for i in 0..<count:
       let fd = loop.keys[i].fd
@@ -574,7 +575,8 @@ else:
         loop.callbacks.addLast(loop.timers.pop().function)
         dec(count)
 
-    # All callbacks which will be added in process will be processed on next
+    # Scheduling callbacks.
+    # all callbacks which will be added in process will be processed on next
     # poll() call.
     count = len(loop.callbacks)
     for i in 0..<count:
diff --git a/tests/testfut.nim b/tests/testfut.nim
index 4936cb20..49028d91 100644
--- a/tests/testfut.nim
+++ b/tests/testfut.nim
@@ -33,7 +33,7 @@ proc test2(): bool =
 
 when isMainModule:
   suite "Future[T] behavior test suite":
-    test "sleepAsync() test":
+    test "`Async undefined behavior (#7758)` test":
       check test1() == true
     test "Immediately completed asynchronous procedure test":
       check test2() == true
diff --git a/tests/testsoon.nim b/tests/testsoon.nim
index e85fc476..115f4591 100644
--- a/tests/testsoon.nim
+++ b/tests/testsoon.nim
@@ -13,6 +13,7 @@ const CallSoonTests = 10
 var soonTest1 = 0'u
 var timeoutsTest1 = 0
 var timeoutsTest2 = 0
+var soonTest2 = 0
 
 proc callback1(udata: pointer) {.gcsafe.} =
   soonTest1 = soonTest1 xor cast[uint](udata)
@@ -53,6 +54,14 @@ proc test2(timers, callbacks: var int) =
   timers = timeoutsTest1
   callbacks = timeoutsTest2
 
+proc testCallback(udata: pointer) =
+  soonTest2 = 987654321
+
+proc test3(): bool =
+  callSoon(testCallback)
+  poll()
+  result = soonTest2 == 987654321
+
 when isMainModule:
   suite "callSoon() tests suite":
     test "User-defined callback argument test":
@@ -64,9 +73,11 @@ when isMainModule:
       for item in values:
         expect = expect xor item
       check test1() == expect
-    test "callSoon() behavior test":
+    test "`Asynchronous dead end` #7193 test":
       var timers, callbacks: int
       test2(timers, callbacks)
       check:
         timers == CallSoonTests
         callbacks > CallSoonTests * 2
+    test "`callSoon() is not working prior getGlobalDispatcher()` #7192 test":
+      check test3() == true