1.106 and later - "An error occurred while rendering. Rendering has stopped". tab unresponsive

CesiumJS
1

from 1.105.1 to 1.106 there is a clear regression in something. A tab with complex scene with entities using Cesium 1.106 and later will stop responding and time out. In 1.105.1 there is no problem

I am still looking for a simple reproducible case for Sandcastle but it’s very clear effect.
EDIT: reproduced in Sandcastle, now:

(zoom a bit in and out, the tab will become unresponsive)

2

Still struggling with making a simple reproducible case. Occasionally / rarely I see when the 1.106 viewer crashes / tabs stops responding:

An error occurred while rendering. Rendering has stopped.
TypeError: Cannot read properties of undefined (reading ‘createMesh’)
TypeError: Cannot read properties of undefined (reading ‘createMesh’)
at Lst (https://cesium.com/downloads/cesiumjs/releases/1.106/Build/Cesium/Cesium.js:11470:8099)
at Dst (https://cesium.com/downloads/cesiumjs/releases/1.106/Build/Cesium/Cesium.js:11470:6205)
at er.processStateMachine (https://cesium.com/downloads/cesiumjs/releases/1.106/Build/Cesium/Cesium.js:11470:3162)
at tr.loadTile (https://cesium.com/downloads/cesiumjs/releases/1.106/Build/Cesium/Cesium.js:11470:124923)
at yY (https://cesium.com/downloads/cesiumjs/releases/1.106/Build/Cesium/Cesium.js:11470:176329)
at Dct (https://cesium.com/downloads/cesiumjs/releases/1.106/Build/Cesium/Cesium.js:11470:176080)
at zf.endFrame (https://cesium.com/downloads/cesiumjs/releases/1.106/Build/Cesium/Cesium.js:11470:168178)
at _m.endFrame (https://cesium.com/downloads/cesiumjs/releases/1.106/Build/Cesium/Cesium.js:11470:187328)
at kpt (https://cesium.com/downloads/cesiumjs/releases/1.106/Build/Cesium/Cesium.js:12670:39878)
at vC (https://cesium.com/downloads/cesiumjs/releases/1.106/Build/Cesium/Cesium.js:12670:39970)

most of the time there is no error log or error UI message.

3

the regression started to happen in this commit Merge pull request #11296 from CesiumGS/terrain-availability · CesiumGS/cesium@2cbe296 · GitHub

4

I managed to reproduce it in Sandcastle (I think)

zoom a bit in and out and the tab stops responding.
Warning: best to open this in a new browser window, it could take down your whole browser window. Tested on Chrome on Mac OS

5

I assume the unobfuscated stack trace from above would be something like
Cesium.js:215524 An error occurred while rendering. Rendering has stopped.
TypeError: Cannot read properties of undefined (reading ‘createMesh’)
TypeError: Cannot read properties of undefined (reading ‘createMesh’)
at transform2 (http://127.0.0.1:8080/Cesium/Build/CesiumUnminified/Cesium.js:176255:37)
at processTerrainStateMachine (http://127.0.0.1:8080/Cesium/Build/CesiumUnminified/Cesium.js:176107:7)
at GlobeSurfaceTile.processStateMachine (http://127.0.0.1:8080/Cesium/Build/CesiumUnminified/Cesium.js:175886:7)
at GlobeSurfaceTileProvider.loadTile (http://127.0.0.1:8080/Cesium/Build/CesiumUnminified/Cesium.js:187256:30)
at processSinglePriorityLoadQueue (http://127.0.0.1:8080/Cesium/Build/CesiumUnminified/Cesium.js:190662:20)
at processTileLoadQueue (http://127.0.0.1:8080/Cesium/Build/CesiumUnminified/Cesium.js:190635:22)
at QuadtreePrimitive.endFrame (http://127.0.0.1:8080/Cesium/Build/CesiumUnminified/Cesium.js:190087:5)
at Globe.endFrame (http://127.0.0.1:8080/Cesium/Build/CesiumUnminified/Cesium.js:191402:21)
at render (http://127.0.0.1:8080/Cesium/Build/CesiumUnminified/Cesium.js:214166:19)
at tryAndCatchError (http://127.0.0.1:8080/Cesium/Build/CesiumUnminified/Cesium.js:214175:7)

6

it seems fixed in 1.114, can’t reproduce