diff --git a/packages/app-cli/tests/enex_to_html/quoted-attributes.enex b/packages/app-cli/tests/enex_to_html/quoted-attributes.enex
new file mode 100644
index 000000000..7be1ad101
--- /dev/null
+++ b/packages/app-cli/tests/enex_to_html/quoted-attributes.enex
@@ -0,0 +1,3 @@
+<en-note>
+  <h1 style="box-sizing:inherit;font-family:&quot;Guardian TextSans Web&quot;, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif;margin-top:0.2em;margin-bottom:0.35em;font-size:2.125em;font-weight:600;line-height:1.3;">Association Between mRNA Vaccination and COVID-19 Hospitalization and Disease Severity</h1>
+</en-note>
diff --git a/packages/app-cli/tests/enex_to_html/quoted-attributes.html b/packages/app-cli/tests/enex_to_html/quoted-attributes.html
new file mode 100644
index 000000000..2957f4fc5
--- /dev/null
+++ b/packages/app-cli/tests/enex_to_html/quoted-attributes.html
@@ -0,0 +1,3 @@
+<en-note>
+  <h1 style="box-sizing:inherit;font-family:&quot;Guardian TextSans Web&quot;, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif;margin-top:0.2em;margin-bottom:0.35em;font-size:2.125em;font-weight:600;line-height:1.3;">Association Between mRNA Vaccination and COVID-19 Hospitalization and Disease Severity</h1>
+</en-note>
\ No newline at end of file
diff --git a/packages/app-cli/tests/html_to_html/anchor_missing_href.dest.html b/packages/app-cli/tests/html_to_html/anchor_missing_href.dest.html
new file mode 100644
index 000000000..0a4898926
--- /dev/null
+++ b/packages/app-cli/tests/html_to_html/anchor_missing_href.dest.html
@@ -0,0 +1 @@
+<a data-from-md href='#'>test</a>
\ No newline at end of file
diff --git a/packages/app-cli/tests/html_to_html/anchor_missing_href.src.html b/packages/app-cli/tests/html_to_html/anchor_missing_href.src.html
new file mode 100644
index 000000000..da987591c
--- /dev/null
+++ b/packages/app-cli/tests/html_to_html/anchor_missing_href.src.html
@@ -0,0 +1 @@
+<a>test</a>
\ No newline at end of file
diff --git a/packages/lib/import-enex-html-gen.test.js b/packages/lib/import-enex-html-gen.test.js
index 348d9df96..93722af11 100644
--- a/packages/lib/import-enex-html-gen.test.js
+++ b/packages/lib/import-enex-html-gen.test.js
@@ -41,6 +41,11 @@ const beautifyHtml = (html) => {
  * `<content><![CDATA[...]]</content>`.
  */
 const compareOutputToExpected = (options) => {
+	options = {
+		resources: [],
+		...options,
+	};
+
 	const inputFile = fileWithPath(`${options.testName}.enex`);
 	const outputFile = fileWithPath(`${options.testName}.html`);
 	const testTitle = `should convert from Enex to Html: ${options.testName}`;
@@ -62,12 +67,10 @@ describe('EnexToHtml', function() {
 
 	compareOutputToExpected({
 		testName: 'checklist-list',
-		resources: [],
 	});
 
 	compareOutputToExpected({
 		testName: 'svg',
-		resources: [],
 	});
 
 	compareOutputToExpected({
@@ -96,6 +99,10 @@ describe('EnexToHtml', function() {
 		}],
 	});
 
+	compareOutputToExpected({
+		testName: 'quoted-attributes',
+	});
+
 	// it('fails when not given a matching resource', (async () => {
 	// 	// To test the promise-unexpectedly-resolved case, add `audioResource` to the array.
 	// 	const resources = [];
diff --git a/packages/lib/resourceUtils.js b/packages/lib/resourceUtils.js
index 51e6cbda3..cab51da61 100644
--- a/packages/lib/resourceUtils.js
+++ b/packages/lib/resourceUtils.js
@@ -39,7 +39,7 @@ const imageMimeTypes = [
 	'image/vnd.xiff',
 ];
 
-const escapeQuotes = (str) => str.replace(/"/g, '"');
+const escapeQuotes = (str) => str.replace(/"/g, '&quot;');
 
 const attributesToStr = (attributes) =>
 	Object.entries(attributes)
diff --git a/packages/renderer/htmlUtils.ts b/packages/renderer/htmlUtils.ts
index 9a27fb31d..0e24f21be 100644
--- a/packages/renderer/htmlUtils.ts
+++ b/packages/renderer/htmlUtils.ts
@@ -192,6 +192,15 @@ class HtmlUtils {
 					}
 				}
 
+				// For some reason, entire parts of HTML notes don't show up in
+				// the viewer when there's an anchor tag without an "href"
+				// attribute. It doesn't always happen and it seems to depend on
+				// what else is in the note but in any case adding the "href"
+				// fixes it. https://github.com/laurent22/joplin/issues/5687
+				if (name.toLowerCase() === 'a' && !attrs['href']) {
+					attrs['href'] = '#';
+				}
+
 				let attrHtml = this.attributesHtml(attrs);
 				if (attrHtml) attrHtml = ` ${attrHtml}`;
 				const closingSign = this.isSelfClosingTag(name) ? '/>' : '>';