diff --git a/changelog.html b/changelog.html
index 372bec38..78ccc89c 100644
--- a/changelog.html
+++ b/changelog.html
@@ -1,3 +1,14 @@
+<div class="list-header">4.0.0-beta1.5<span>@fbebd8ab68081089f9f4</span> <time datetime="2017-12-13">(2017-12-13)</time></div>
+<ul class="chat-menu-content menu-side-padding">
+	<li>Fixed: Detection of Promise return values on Firefox, where Promises are apparently not Promises.</li>
+</ul>
+
+<div class="list-header">4.0.0-beta1.5<span>@88b2aa86d34d0649d0d5</span> <time datetime="2017-12-13">(2017-12-13)</time></div>
+<ul class="chat-menu-content menu-side-padding">
+	<li>Added: Host Button</li>
+	<li>Added: Option to hide vodcasts from the directory.</li>
+</ul>
+
 <div class="list-header">4.0.0-beta1.4<span>@317c31074720f7071bd3</span> <time datetime="2017-12-13">(2017-12-13)</time></div>
 <ul class="chat-menu-content menu-side-padding">
 	<li>Fixed: Tooltip positioning.</li>
diff --git a/src/main.js b/src/main.js
index 0c879806..e952bcdd 100644
--- a/src/main.js
+++ b/src/main.js
@@ -95,7 +95,7 @@ class FrankerFaceZ extends Module {
 FrankerFaceZ.Logger = Logger;
 
 const VER = FrankerFaceZ.version_info = {
-	major: 4, minor: 0, revision: 0, extra: '-beta1.4',
+	major: 4, minor: 0, revision: 0, extra: '-beta1.5',
 	build: __webpack_hash__,
 	toString: () =>
 		`${VER.major}.${VER.minor}.${VER.revision}${VER.extra || ''}${DEBUG ? '-dev' : ''}`
diff --git a/src/sites/twitch-twilight/styles/channel.scss b/src/sites/twitch-twilight/styles/channel.scss
index fa90c704..21271d9b 100644
--- a/src/sites/twitch-twilight/styles/channel.scss
+++ b/src/sites/twitch-twilight/styles/channel.scss
@@ -30,8 +30,8 @@
 }
 
 .tw-theme--ffz, .tw-theme--ffz.tw-theme--dark, .tw-theme--dark, body {
-	.ffz-stat > .tw-button,
-	.ffz-stat.tw-button {
+	.ffz-stat > .tw-button--text,
+	.ffz-stat.tw-button--text {
 		color: inherit;
 	}
 }
diff --git a/src/utilities/tooltip.js b/src/utilities/tooltip.js
index f48c7bb9..985ac151 100644
--- a/src/utilities/tooltip.js
+++ b/src/utilities/tooltip.js
@@ -255,7 +255,7 @@ export class Tooltip {
 			}
 		}
 
-		if ( content instanceof Promise ) {
+		if ( content instanceof Promise || (content.then && content.toString() === '[object Promise]') ) {
 			inner.innerHTML = '<div class="ffz-i-zreknarf loader"></div>';
 			content.then(content => {
 				if ( ! content )