diff --git a/src/edit.test.js b/src/edit.test.js
index 3cbed9b..8c467d4 100644
--- a/src/edit.test.js
+++ b/src/edit.test.js
@@ -526,6 +526,13 @@ function createCitation({
 	};
 }
 
+// The mocked notices store is module-level state shared by every render in
+// this file; reset it per test so a notice left by one test (and its Dismiss
+// button) never leaks into another under --randomize.
+beforeEach(() => {
+	require('@wordpress/data').__unstableResetNotices();
+});
+
 describe('Edit focus management', () => {
 	beforeEach(() => {
 		jest.clearAllMocks();
@@ -538,7 +545,6 @@ describe('Edit focus management', () => {
 		downloadCslJsonExport.mockReset();
 		downloadRisExport.mockReset();
 		copyTextToClipboard.mockReset();
-		require('@wordpress/data').__unstableResetNotices();
 	});
 
 	it('shows DOI/BibTeX-only guidance when parsing fails without entries', async () => {
diff --git a/src/hooks/use-citation-editor-state.test.js b/src/hooks/use-citation-editor-state.test.js
index 3b564ce..67b1c36 100644
--- a/src/hooks/use-citation-editor-state.test.js
+++ b/src/hooks/use-citation-editor-state.test.js
@@ -107,6 +107,10 @@ function makeHookArgs(citations = [makeCitation()]) {
 
 beforeEach(() => {
 	jest.clearAllMocks();
+	// mockReset (not just clearAllMocks) drops queued *Once values: several
+	// race tests queue a pending format result the save never reaches, which
+	// would otherwise be handed to whichever test calls the formatter next.
+	formatBibliographyEntries.mockReset();
 	formatBibliographyEntries.mockImplementation((items) =>
 		items.map(() => 'Reformatted entry')
 	);
diff --git a/src/lib/parser.test.js b/src/lib/parser.test.js
index 76a9ae4..28f7a62 100644
--- a/src/lib/parser.test.js
+++ b/src/lib/parser.test.js
@@ -25,6 +25,11 @@ import {
 } from './parser';
 import { formatBibliographyEntries } from './formatting/csl';
 
+// parsePastedInput lazily imports './formatting/csl' at call time, so the
+// module registry must keep resolving to these file-level mock instances.
+const formattingCslMock = jest.requireMock('./formatting/csl');
+const apiFetchMock = jest.requireMock('@wordpress/api-fetch');
+
 describe('validateAndSanitizeCsl', () => {
 	it('sanitizes nested values and normalizes issued date-parts', () => {
 		const sanitized = validateAndSanitizeCsl({
@@ -1458,8 +1463,12 @@ describe('PMID fallback resolution', () => {
 	}
 
 	afterEach(() => {
+		// Undo mockParserDependencies: after resetModules the registry would
+		// hand parser's lazy import a fresh formatter mock the other tests in
+		// this file never see, and api-fetch would stay mocked as undefined.
 		jest.resetModules();
-		jest.dontMock('@wordpress/api-fetch');
+		jest.doMock('./formatting/csl', () => formattingCslMock);
+		jest.doMock('@wordpress/api-fetch', () => apiFetchMock);
 	});
 
 	it('falls back to window.fetch when the WordPress REST helper is unavailable', async () => {