Changing 2D label model id can cause problems

[goddard@…]

The following bug report has been submitted:
Platform:        Darwin-19.4.0-x86_64-i386-64bit
ChimeraX Version: 1.0rc202005271742 (2020-05-27 17:42:24 UTC)
Description
Changing the id of the 2D labels model makes it a child of the scene_root_model instead of its own parent-less model.  This could mess up rendering the 3D models or bounds calculations although I did not observe problems in this test.

Log:
UCSF ChimeraX version: 1.0rc202005270116 (2020-05-27)  
© 2016-2020 Regents of the University of California. All rights reserved.  

> open /Users/goddard/ucsf/cx-1.0/src/core/test.cxs format session

Log from Wed May 27 17:13:05 2020 Startup Messages  
---  
warnings | QWebEngineUrlScheme::registerScheme: Scheme "cxcmd" already
registered  
QWebEngineUrlScheme::registerScheme: Scheme "help" already registered  
QWebEngineUrlScheme::registerScheme: Scheme "cxcmd" already registered  
QWebEngineUrlScheme::registerScheme: Scheme "help" already registered  
QWebEngineUrlScheme::registerScheme: Scheme "cxcmd" already registered  
8 messages similar to the above omitted  
Replacing file-saver for 'DCD coordinates' from MDcrds bundle with that from
MD-crds bundle  
Replacing opener for 'Gromacs full-precision coordinates' from MDcrds bundle
with that from MD-crds bundle  
Replacing opener for 'Gromacs compressed coordinates' from MDcrds bundle with
that from MD-crds bundle  
Replacing opener for 'DCD coordinates' from MDcrds bundle with that from MD-
crds bundle  
notes | Replacing data format 'Gromacs full-precision coordinates' as defined
by ChimeraX-MDcrds bundle with definition from ChimeraX-MD-crds bundle  
Replacing data format 'Gromacs compressed coordinates' as defined by ChimeraX-
MDcrds bundle with definition from ChimeraX-MD-crds bundle  
Replacing data format 'DCD coordinates' as defined by ChimeraX-MDcrds bundle
with definition from ChimeraX-MD-crds bundle  
  
UCSF ChimeraX version: 1.0rc202005270116 (2020-05-27)  
© 2016-2020 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open 5ip2 format mmcif fromDatabase pdb

5ip2 title:  
Tomato spotted wilt tospovirus nucleocapsid protein-ssRNA complex [more
info...]  
  
Chain information for 5ip2 #1  
---  
Chain | Description  
A B C | Nucleoprotein  
D F | RNA (5'-D(P*up*up*U)-3')  
E | RNA (5'-R(P*up*up*up*up*up*up*up*up*up*up*up*up*up*up*up*up*up*up*U)-3')  
  

> 2dlabels text Hello

> rename #2 id #3

> 2dlabels text Bye-bye ypos .8

> save test.cxs

opened ChimeraX session  

> ui tool show Shell

> view

> rename #2 id #3

> rename #3 id #5

> view

> view

> view




OpenGL version: 4.1 ATI-3.8.24
OpenGL renderer: AMD Radeon Pro Vega 20 OpenGL Engine
OpenGL vendor: ATI Technologies Inc.Hardware:

    Hardware Overview:

      Model Name: MacBook Pro
      Model Identifier: MacBookPro15,3
      Processor Name: 8-Core Intel Core i9
      Processor Speed: 2.4 GHz
      Number of Processors: 1
      Total Number of Cores: 8
      L2 Cache (per Core): 256 KB
      L3 Cache: 16 MB
      Hyper-Threading Technology: Enabled
      Memory: 32 GB
      Boot ROM Version: 1037.100.362.0.0 (iBridge: 17.16.14281.0.0,0)

Software:

    System Software Overview:

      System Version: macOS 10.15.4 (19E287)
      Kernel Version: Darwin 19.4.0
      Time since boot: 18 days 20:53

Graphics/Displays:

    Intel UHD Graphics 630:

      Chipset Model: Intel UHD Graphics 630
      Type: GPU
      Bus: Built-In
      VRAM (Dynamic, Max): 1536 MB
      Vendor: Intel
      Device ID: 0x3e9b
      Revision ID: 0x0002
      Automatic Graphics Switching: Supported
      gMux Version: 5.0.0
      Metal: Supported, feature set macOS GPUFamily2 v1

    Radeon Pro Vega 20:

      Chipset Model: Radeon Pro Vega 20
      Type: GPU
      Bus: PCIe
      PCIe Lane Width: x8
      VRAM (Total): 4 GB
      Vendor: AMD (0x1002)
      Device ID: 0x69af
      Revision ID: 0x00c0
      ROM Revision: 113-D2060I-087
      VBIOS Version: 113-D20601MA0T-016
      Option ROM Version: 113-D20601MA0T-016
      EFI Driver Version: 01.01.087
      Automatic Graphics Switching: Supported
      gMux Version: 5.0.0
      Metal: Supported, feature set macOS GPUFamily2 v1
      Displays:
        Color LCD:
          Display Type: Built-In Retina LCD
          Resolution: 2880 x 1800 Retina
          Framebuffer Depth: 24-Bit Color (ARGB8888)
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Automatically Adjust Brightness: No
          Connection Type: Internal

PyQt version: 5.12.3
Compiled Qt version: 5.12.4
Runtime Qt version: 5.12.8