Fix Impersonate Roles dialog rendering with a hugely oversized column - #7901
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The role grid's single flex column could be laid out before the containing window had a final, on-screen width, leaving the column (and its header) stuck at ExtJS's internal 20000px box-layout measurement placeholder instead of the real rendered width, which pushed the dialog's contents far outside the window frame. Force the grid to relayout once the window's `show` event fires, guaranteeing the flex column recalculates against the window's actual, final size.
cnathe
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Aug 3, 2026
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I pulled the change down locally and did some quick manual testing as well.
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Rationale
The "Impersonate Roles" dialog intermittently rendered with its role grid massively oversized (column width in the tens of thousands of pixels), spilling the dialog content far outside its window frame. This was traced to a race in ExtJS 4's box layout: the grid's single
flex: 1column can be laid out before the containingExt.window.Windowhas a final, resolved width, leaving the column stuck at ExtJS's internal 20000px measurement placeholder (Ext.layout.container.Box.beginLayoutCycle) instead of being corrected to the real width. This is more likely to reproduce under CI timing than in normal local use.Related Pull Requests
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Changes
core/webapp/Impersonate.js: added ashowlistener on theImpersonateRoleswindow that forces the role grid to relayout once the window is fully shown, so the flex column recalculates against the window's actual final width.