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set this._latestYDisp = undefined onBufferActivate

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This commit is contained in:
Anthony Kim
2025-10-01 20:36:06 -07:00
parent 32c3cb01a1
commit 2a6e22e8f8
1 changed files with 6 additions and 2 deletions
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src/browser/Viewport.ts
+6 -2
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@@ -94,7 +94,12 @@ export class Viewport extends Disposable {
}));
this._register(this._bufferService.onResize(() => this.queueSync()));
this._register(this._bufferService.buffers.onBufferActivate(() => this.queueSync()));
this._register(this._bufferService.buffers.onBufferActivate(() => {
// Reset _latestYDisp when switching buffers to prevent stale scroll position
// from alt buffer contaminating normal buffer scroll position
this._latestYDisp = undefined;
this.queueSync();
}));
this._register(this._bufferService.onScroll(() => this._sync()));
this._register(this._scrollableElement.onScroll(e => this._handleScroll(e)));
@@ -160,7 +165,6 @@ export class Viewport extends Disposable {
// If ydisp has been changed by some other component (input/buffer), then stop animating smooth
// scroll and scroll there immediately.
if (ydisp !== this._latestYDisp) {
this._latestYDisp = ydisp;
this._scrollableElement.setScrollPosition({
scrollTop: ydisp * this._renderService.dimensions.css.cell.height
});