diff --git a/ui/TODO.otl b/ui/TODO.otl
index 509714c7..5b1a90d4 100755
--- a/ui/TODO.otl
+++ b/ui/TODO.otl
@@ -110,6 +110,17 @@ Roadmap
 
 [_] 29% Gen 3 current todo
 	[_] 58% High priority
+		[_] BUG: Something is causing previews to reload...
+		| procedure:
+		| 	- moving left/right in one ribbon
+		| 	- adjacent ribbon is not moving
+		|
+		| effect:
+		| 	- previews get reloaded
+		|
+		| expected:
+		| 	- all unmoving ribbons remain static
+		|
 		[_] Polish: on LOCAL actions do ALL the loading in background...
 		| make the lags completely even...
 		[_] check image caching strategy and thresholds....
diff --git a/ui/setup.js b/ui/setup.js
index ce8c6bee..b05b241a 100755
--- a/ui/setup.js
+++ b/ui/setup.js
@@ -144,6 +144,9 @@ function setupDataBindings(viewer){
 				// head at threshold - roll <-
 				} else if(!at_start && head < threshold){
 					var rolled = rollImages(-roll_frame_size, ribbon)
+
+				} else {
+					console.log('>>> skipping:', r)
 				}
 
 			// we jumped, load new set...