fix(material/expansion): Expansion panel content flickers during animation for lazy-loaded custom height nested expansion panels #26772
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…ation for lazy-loaded custom height nested expansion panels This fix introduces workaround for a `void => collapsed` animation that is causing improper behaviour for lazy-loaded body. First, it disables first `void => collapsed` animation after init to disable recalculation which fixes changing heights of inner panels. Second, it sets `mat-expansion-panel-hidden` class on content init and removes it on creating lazy-loaded body to remove flicker of parent expansion panel Fixes angular#22715
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Closing in favor of #30119. |
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This fix introduces workaround for a
void => collapsedanimation that is causing improper behaviour for lazy-loaded body.void => collapsedanimation after init to disable recalculation which fixes changing heights of inner panels.mat-expansion-panel-hiddenclass on content init and removes it on creating lazy-loaded body to remove flicker of parent expansion panelBEFORE
AFTER
Fixes #22715