diff --git a/scripts/uosc/elements/Volume.lua b/scripts/uosc/elements/Volume.lua
index 356feca..05e1d28 100644
--- a/scripts/uosc/elements/Volume.lua
+++ b/scripts/uosc/elements/Volume.lua
@@ -1,3 +1,4 @@
+msg = require('mp.msg')
 local Element = require('elements/Element')
 
 --[[ MuteButton ]]
@@ -73,7 +74,9 @@ function VolumeSlider:render()
 
 	if width <= 0 or height <= 0 or visibility <= 0 then return end
 
+	msg.trace("VolumeSlider: proximity_raw:", self.proximity_raw)
 	if self.proximity_raw == 0 then
+		msg.trace("VolumeSlider: setting on_primary_down")
 		cursor.on_primary_down = function()
 			self.pressed = true
 			self:set_from_cursor()
diff --git a/scripts/uosc/lib/utils.lua b/scripts/uosc/lib/utils.lua
index f25c52e..24425df 100644
--- a/scripts/uosc/lib/utils.lua
+++ b/scripts/uosc/lib/utils.lua
@@ -1,4 +1,5 @@
 --[[ UI specific utilities that might or might not depend on its state or options ]]
+msg = require('mp.msg')
 
 -- Sorting comparator close to (but not exactly) how file explorers sort files.
 sort_filenames = (function()
@@ -646,6 +647,7 @@ end
 
 function render()
 	if not display.initialized then return end
+	msg.trace("render")
 	state.render_last_time = mp.get_time()
 
 	cursor.reset_handlers()
diff --git a/scripts/uosc/main.lua b/scripts/uosc/main.lua
index 0673a1e..8811a71 100644
--- a/scripts/uosc/main.lua
+++ b/scripts/uosc/main.lua
@@ -671,6 +671,7 @@ end
 
 function handle_mouse_pos(_, mouse)
 	if not mouse then return end
+	msg.trace("handle_mouse_pos: x:", mouse.x, ", y:", mouse.y, ", hover:", mouse.hover, ", hover_raw:", cursor.hover_raw, "first_real_received:", state.first_real_mouse_move_received)
 	if cursor.hover_raw and not mouse.hover then
 		handle_mouse_leave()
 	else
@@ -879,7 +880,9 @@ cursor.decide_keybinds()
 -- Pointer related binding groups
 function make_cursor_handler(event, cb)
 	return function(...)
+		msg.trace("UOSC EVENT:", event)
 		call_maybe(cb, ...)
+		msg.trace("calling cursor[event]", cursor[event])
 		call_maybe(cursor[event], ...)
 		cursor.queue_autohide() -- refresh cursor autohide timer
 	end