[INTERNAL] sap.f.FCL: Resume visible columns to clear suspension state

Columns could remain permanently suspended when animation mode
changed from "full" to "none" mid-session.

Root cause: The resumeResizeHandler flag was only set to true when
animations were enabled (bSuspendResizeHandler && !bHidden). When
animation mode changed to "none", bSuspendResizeHandler became false,
so columns that were suspended during previous animations were never
resumed.

Fix: Always resume visible columns (!bHidden) regardless of animation
mode. ResizeHandler.resume() is safe to call on non-suspended elements
- it simply returns false without side effects.

Change-Id: If48b0c5f607cf3aeef157857c7ad1c21e7fda6be
CR-Id: 002075125900000202692026
SNOW: CS20260011773107
(cherry picked from commit ef61e93)

Author: dobrinyonkov

src/sap.f/src/sap/f/FlexibleColumnLayout.js

@@ -1461,7 +1461,13 @@ sap.ui.define([
 			bResizeColumnWithAnimation = this._canResizeColumnWithAnimation(sColumn, oColumnConfig),
 			bSuspendResizeHandler = bAnimationsEnabled,
 			fnAfterResizeCallback = this._afterColumnResize.bind(this, sColumn, merge(oColumnConfig, {
-				resumeResizeHandler: bSuspendResizeHandler && !bHidden // toggle back after resize
+				// Always resume visible columns to clear any leftover suspension state.
+				// This handles the case when animation mode changes from "full" to "none"
+				// mid-session - without this, columns suspended during animations would
+				// stay suspended forever since bSuspendResizeHandler becomes false.
+				// Calling ResizeHandler.resume() on a non-suspended element is safe and
+				// simply returns false without any side effects.
+				resumeResizeHandler: !bHidden
 			})),
 			fnResizeErrorCallback = function() {
 				ResizeHandler.resume(oColumnDomRef);

src/sap.f/test/sap/f/qunit/FlexibleColumnLayout.qunit.js

@@ -1059,6 +1059,40 @@ function(
 		});
 	});
 
+	QUnit.test("Suspended columns are resumed when animation mode changes from 'full' to 'none'", function (assert) {
+		// arrange
+		var fnDone = assert.async(),
+			sOriginalAnimationMode = ControlBehavior.getAnimationMode(),
+			oBeginColumnDomRef = this.oFCL._$columns["begin"].get(0),
+			oMidColumnDomRef = this.oFCL._$columns["mid"].get(0),
+			oResumeSpy = this.spy(ResizeHandler, "resume");
+
+		// act: change layout with animations enabled (columns get suspended)
+		this.oFCL.setLayout(LT.TwoColumnsMidExpanded);
+
+		this.oFCL._attachAfterAllColumnsResizedOnce(function () {
+			setTimeout(function () {
+				oResumeSpy.resetHistory();
+
+				// act: switch animation mode to 'none'
+				ControlBehavior.setAnimationMode("none");
+
+				// act: change layout again - this should resume any suspended columns
+				this.oFCL.setLayout(LT.TwoColumnsBeginExpanded);
+
+				// assert: resume is called for visible columns even though animations are disabled
+				assert.ok(oResumeSpy.calledWith(oBeginColumnDomRef),
+					"ResizeHandler.resume called for begin column when animation mode is 'none'");
+				assert.ok(oResumeSpy.calledWith(oMidColumnDomRef),
+					"ResizeHandler.resume called for mid column when animation mode is 'none'");
+
+				// cleanup
+				ControlBehavior.setAnimationMode(sOriginalAnimationMode);
+				fnDone();
+			}.bind(this), 0);
+		}.bind(this));
+	});
+
 	QUnit.test("_getPreviousLayout", function (assert) {
 		var sLayoutBeforeUpdate = this.oFCL.getLayout();
 		this.oFCL.setLayout(LT.TwoColumnsMidExpanded);