placement, line drawing, and price display fixes (inverted test)

src/charts/chart.js

@@ -22,7 +22,7 @@ export function removeSymbolChangedCallback(cb) {
 }
 
 function changeSymbol(symbol) {
-    console.log('change symbol', symbol)
+    console.error('change symbol', symbol)
     if (symbol===null)
         co.selectedSymbol = null
     else {
@@ -33,8 +33,13 @@ function changeSymbol(symbol) {
 }
 
 
-export function setSymbol(symbol) {
-    widget.activeChart().setSymbol(symbol.ticker)
+export async function setSymbol(symbol) {
+    await new Promise(resolve => {
+        if (co.selectedSymbol?.ticker !== symbol.ticker)
+            widget.activeChart().setSymbol(symbol.ticker, null, resolve)
+        else
+            resolve()
+    })
 }
 
 
@@ -194,6 +199,9 @@ export function createShape(shapeType, points, options={}, ...callbacks) {
         console.error('tvShape could not create', shapeType, points, options, e)
         return null
     }
+    if (shapeId===null) {
+        console.error('could not create shape', points, options)
+    }
     allShapeIds.push(shapeId)
     if( callbacks.length )
         shapeCallbacks[shapeId] = callbacks