diff --git a/knownBugs.txt b/knownBugs.txt
index 791709e..e17842e 100644
--- a/knownBugs.txt
+++ b/knownBugs.txt
@@ -1,4 +1,8 @@
 history tool doesnt load polygon data on undo iff project was loaded
-history tool doesnt save delete Layer - done
+history tool doesnt save delete Layer
+history tool creates to many layers
+history tool resets polygon data to late and on the wrong possition
+
+
 Gradient breaks Heap Size, when big Witdh and Height (appeared on 1280x720)
 Heap block at 0000000025422990 modified at 0000000025422A28 past requested size of 88
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