diff --git a/data/15-regressions.blt b/data/15-regressions.blt
index ceb536e..6bc82cd 100644
--- a/data/15-regressions.blt
+++ b/data/15-regressions.blt
@@ -329,11 +329,13 @@ func =
                                         foooooooooooooooooooooooooooooooo
 
 #test opapp-specialcasing-3
-func = fooooooooooooooooooooooooooooooooo + foooooooooooooooooooooooooooooooo
-  [ foooooooooooooooooooooooooooooooo
-  , foooooooooooooooooooooooooooooooo
-  , foooooooooooooooooooooooooooooooo
-  ]
+func =
+  fooooooooooooooooooooooooooooooooo
+    + foooooooooooooooooooooooooooooooo
+        [ foooooooooooooooooooooooooooooooo
+        , foooooooooooooooooooooooooooooooo
+        , foooooooooooooooooooooooooooooooo
+        ]
 
 #test opapp-indenting
 parserPrim =
@@ -966,3 +968,8 @@ func =
         )
     <$> mylist
     )
+
+#test operator newline behaviour
+func =
+  fromIntegral aaaaaaaaaaaaaaaaaaa
+    / fromIntegral (aaaaaaaaaaaaaaaaaaa + bbbbbbbbbbbbbbbbbb)
diff --git a/data/30-tests-context-free.blt b/data/30-tests-context-free.blt
index 36aaf62..dbe1273 100644
--- a/data/30-tests-context-free.blt
+++ b/data/30-tests-context-free.blt
@@ -1278,11 +1278,13 @@ func =
         foooooooooooooooooooooooooooooooo
 
 #test opapp-specialcasing-3
-func = fooooooooooooooooooooooooooooooooo + foooooooooooooooooooooooooooooooo
-  [ foooooooooooooooooooooooooooooooo
-  , foooooooooooooooooooooooooooooooo
-  , foooooooooooooooooooooooooooooooo
-  ]
+func =
+  fooooooooooooooooooooooooooooooooo
+    + foooooooooooooooooooooooooooooooo
+        [ foooooooooooooooooooooooooooooooo
+        , foooooooooooooooooooooooooooooooo
+        , foooooooooooooooooooooooooooooooo
+        ]
 
 #test opapp-indenting
 parserPrim =
diff --git a/source/library/Language/Haskell/Brittany/Internal/ToBriDoc/OpTree.hs b/source/library/Language/Haskell/Brittany/Internal/ToBriDoc/OpTree.hs
index 0710caf..cb0421a 100644
--- a/source/library/Language/Haskell/Brittany/Internal/ToBriDoc/OpTree.hs
+++ b/source/library/Language/Haskell/Brittany/Internal/ToBriDoc/OpTree.hs
@@ -198,6 +198,9 @@ layoutOpTree allowSinglelinePar = \case
           pure (pure op, subDoc)
     sharedOpsFlat <- flattenList docOps
     sharedOps     <- simpleTransform docOps
+    let lastWrap = if getPrec fixity <= 1
+          then docForceParSpacing
+          else docForceSingleline
     coreAlternative hasParen
                     locO
                     locC
@@ -205,11 +208,12 @@ layoutOpTree allowSinglelinePar = \case
                     docL
                     sharedOps
                     sharedOpsFlat
-                    docForceParSpacing
+                    lastWrap
   OpLeaf l -> pure l
  where
-  isPrec0 = \case
-    Fixity _ prec _ -> prec == 0
+  isPrec0 x = getPrec x == 0
+  getPrec = \case
+    Fixity _ prec _ -> prec
   coreAlternative
     :: Bool
     -> Maybe GHC.RealSrcLoc
@@ -268,33 +272,35 @@ layoutOpTree allowSinglelinePar = \case
           $ wrapParenIfSl hasParen
           $ docSetParSpacing
           $ docSeq
-          ([docForceSingleline docL] ++ case splitFirstLast sharedOpsFlat of
-            FirstLastEmpty -> []
-            FirstLastSingleton (od, ed) ->
-              [docSeparator, docForceSingleline od, docSeparator, lastWrap ed]
-            FirstLast (od1, ed1) ems (odN, edN) ->
-              (  [ docSeparator
-                 , docForceSingleline od1
-                 , docSeparator
-                 , docForceSingleline ed1
-                 ]
-              ++ join
-                   [ [ docSeparator
-                     , docForceSingleline od
+              ([docForceSingleline docL] ++ case splitFirstLast sharedOpsFlat of
+                FirstLastEmpty -> []
+                FirstLastSingleton (od, ed) ->
+                  [ docSeparator
+                  , docForceSingleline od
+                  , docSeparator
+                  , lastWrap ed
+                  ]
+                FirstLast (od1, ed1) ems (odN, edN) ->
+                  (  [ docSeparator
+                     , docForceSingleline od1
                      , docSeparator
-                     , docForceSingleline ed
+                     , docForceSingleline ed1
                      ]
-                   | (od, ed) <- ems
-                   ]
-              ++ [ docSeparator
-                 , docForceSingleline odN
-                 , docSeparator
-                 , lastWrap edN
-                 ]
+                  ++ join
+                       [ [ docSeparator
+                         , docForceSingleline od
+                         , docSeparator
+                         , docForceSingleline ed
+                         ]
+                       | (od, ed) <- ems
+                       ]
+                  ++ [ docSeparator
+                     , docForceSingleline odN
+                     , docSeparator
+                     , lastWrap edN
+                     ]
+                  )
               )
-          )
-        -- this case rather leads to some unfortunate layouting than to anything
-        -- useful; disabling for now. (it interfers with cols stuff.)
         -- one
         -- + two
         -- + three
@@ -308,15 +314,14 @@ layoutOpTree allowSinglelinePar = \case
               IndentPolicyMultiple -> docForceSingleline
               IndentPolicyFree     -> id
         let curIsPrec0 = case fixity of
-              Nothing -> False
+              Nothing                -> False
               Just (Fixity _ prec _) -> prec == 0
         case sharedOps of
           [(od, ed)] | curIsPrec0 ->
             addAlternativeCond (not hasParen && isSingleOp)
               $ docSetParSpacing
-              $ docPar
-                (docHandleComms locO $ docForceSingleline $ docL)
-                (docSeq [od, docSeparator, singlelineUnlessFree ed])
+              $ docPar (docHandleComms locO $ docForceSingleline $ docL)
+                       (docSeq [od, docSeparator, singlelineUnlessFree ed])
           _ -> pure ()
         -- > ( one
         -- > + two
@@ -334,9 +339,9 @@ layoutOpTree allowSinglelinePar = \case
         -- >   + three
         addAlternative
           $ wrapParenMlIf
-              hasParen
+            hasParen
           -- ((if not hasParen then docAddBaseY BrIndentRegular else id) docL)
-              (if hasParen then docSetBaseY docL else docL)
-              ((if hasParen then sharedOps else sharedOpsFlat) <&> \(od, ed) ->
-                docCols ColOpPrefix [appSep od, docSetBaseY ed]
-              )
+            (if hasParen then docSetBaseY docL else docL)
+            ((if hasParen then sharedOps else sharedOpsFlat) <&> \(od, ed) ->
+              docCols ColOpPrefix [appSep od, docSetBaseY ed]
+            )