revert 16463 and 16501 (#16519)

Reverts #16463 and #16501

Issues fixed
Issues reopened
Reopens #16456

Reason for revert
complexity

Can this PR be reimplemented? If so, what is required for the next attempt
at least execution of scrollToCursorOrSelection in _doNewObject

source/braille.py

@@ -2560,9 +2560,8 @@ def _doNewObject(self, regions):
 		self.mainBuffer.update()
 		# Last region should receive focus.
 		self.mainBuffer.focus(region)
-		if isinstance(region, TextInfoRegion):
-			self.scrollToCursorOrSelection(region)
-		elif self.buffer is self.mainBuffer:
+		self.scrollToCursorOrSelection(region)
+		if self.buffer is self.mainBuffer:
 			self.update()
 		elif self.buffer is self.messageBuffer and keyboardHandler.keyCounter>self._keyCountForLastMessage:
 			self._dismissMessage()
@@ -2616,10 +2615,8 @@ def _handlePendingUpdate(self):
 			self.mainBuffer.update()
 			self.mainBuffer.restoreWindow()
 			if scrollTo is not None:
-				if self.buffer is self.messageBuffer:
-					self._dismissMessage(shouldUpdate=False)
 				self.scrollToCursorOrSelection(scrollTo)
-			elif self.buffer is self.mainBuffer:
+			if self.buffer is self.mainBuffer:
 				self.update()
 			elif (
 				self.buffer is self.messageBuffer