VAB: Part Manager doesn't refresh when switching assemblies.

[Nifty255]

• KSP Version: 0.1.0.20892
• Operating System: Windows 10 latest
• CPU / GPU: Intel 9700KF / MSI Gaming X Trio RTX 3070
• Description of the bug.  
  • Expected Behavior
    • Selecting another assembly should rebuild the part list in the Part Manager immediately
  • Observed Behavior
    • Part Manager does not rebuild its part list until the newly selected assembly is modified in some way, either by adding or removing a part.
• Steps to Replicate
  1. Pick and place any part.
  2. Pick and place a second, different part NOT connected to the original. This creates a second assembly.
  3. Open the Part Manager. You'll see one part.
  4. Use the Current Assembly icons to select the second part's assembly.
  5. Note the Part Manager does not yet show the newly selected second assembly's other part.
• Fixes / Workarounds: Add and remove any part to the newly selected assembly to rebuild the Part Manager.
• A list of ALL mods: None
• Other Notes / Screenshots / Log Files:

[Bej Kerman]

Parts Manager should also have a better way of adapting to changes in a vessel. Any time a part is added or changed on a vessel, the game freezes for a sec as it completely rebuilds a parts list that only had one thing change in it. Building even massive vessels is for the mostpart smooth, unless you have the manager open in which case using the VAB might feel as laggy as it was in KSP 1.