Description

When clicking on InstancedStaticMeshComponent with many elements, Editor memory usage increases and editor freezes until the operation is finished. The wait and memory usage get much worse when using Japanese IME.

Steps to Reproduce

0. (Turn on Google Japanese Input or Microsoft IME)
1. Open the attached scene
2. Open Task Manager to check UE4 memory usage
3. Click on NewBlueprint2, then click its InstancedStaticMesh component in Details
4. Do the same as other two blueprints
5. When there are more elements, memory usage will be worse, and Editor will freeze for a while

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Fixed
ComponentTools
Affects Versions4.16
Target Fix4.18
Fix Commit3600812
Main Commit3621569
Release Commit3643070
CreatedAug 7, 2017
ResolvedAug 21, 2017
UpdatedSep 23, 2019
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