diff --git a/modules/dynamic/hierarchy-tree.js b/modules/dynamic/hierarchy-tree.js
index 95093790..6cd25f0e 100644
--- a/modules/dynamic/hierarchy-tree.js
+++ b/modules/dynamic/hierarchy-tree.js
@@ -68,13 +68,27 @@ function appendStyleSheet() {
       margin: 0 2px;
     }
 
-    .hierarchyTree_selectedButton {
+    #hierarchyTree {
+      display: flex;
+      flex-direction: column;
+      justify-content: space-between;
+    }
+
+    #hierarchyTree > svg {
+      height: 100%;
+    }
+
+    .hierarchyTree_selectedOrigins {
+      margin-right: 15px;
+    }
+
+    .hierarchyTree_selectedOrigin {
       border: 1px solid #aaa;
       background: none;
       padding: 1px 4px;
     }
 
-    .hierarchyTree_selectedButton:hover {
+    .hierarchyTree_selectedOrigin:hover {
       border: 1px solid #333;
     }
 
@@ -88,6 +102,10 @@ function appendStyleSheet() {
       color: #333;
     }
 
+    #hierarchyTree_originSelector {
+      display: none;
+    }
+
     #hierarchyTree_originSelector > form > div {
       padding: 0.3em;
       margin: 1px 0;
@@ -147,8 +165,8 @@ function insertHtml() {
         <span><span id='hierarchyTree_selectedName'></span>. </span>
         <span data-name="Type short name (abbreviation)">Abbreviation: <input id='hierarchyTree_selectedCode' type='text' maxlength='3' size='3' /></span>
         <span>Origins: <span id='hierarchyTree_selectedOrigins'></span></span>
-        <button data-tip='Add origin' class="hierarchyTree_selectedButton" id='hierarchyTree_selectedSelectButton'>Select</button>
-        <button data-tip='Exit edit mode' class="hierarchyTree_selectedButton" id='hierarchyTree_selectedCloseButton'>Exit</button>
+        <button data-tip='Edit this node's origins' class="hierarchyTree_selectedButton" id='hierarchyTree_selectedSelectButton'>Edit</button>
+        <button data-tip='Unselect this node' class="hierarchyTree_selectedButton" id='hierarchyTree_selectedCloseButton'>Unselect</button>
       </div>
     </div>
     <div id="hierarchyTree_originSelector"></div>
@@ -237,12 +255,18 @@ function renderTree(root, treeLayout) {
     .call(d3.drag().on("start", dragToReorigin));
 
   node
-    .append("path")
-    .attr("d", ({data}) => shapesMap[getShape(data)])
+    .selectAll("path")
+    .data(d => [d])
+    .join("path")
+    .attr("d", d => shapesMap[getShape(d.data)])
     .attr("fill", d => d.data.color || "#ffffff")
     .attr("stroke-dasharray", d => (d.data.cells ? "none" : "1"));
 
-  node.append("text").text(d => d.data.code || "");
+  node
+    .selectAll("text")
+    .data(d => [d])
+    .join("text")
+    .text(d => d.data.code || "");
 }
 
 function mapCoords(newRoot, prevRoot) {
@@ -320,6 +344,7 @@ function updateTree() {
 
 function selectElement(d) {
   const dataElement = d.data;
+  if (d.id == 0) return;
 
   const node = nodes.select(`g[data-id="${d.id}"]`);
   nodes.selectAll("g").style("outline", "none");
@@ -453,6 +478,8 @@ function handleNodeExit(d) {
 }
 
 function dragToReorigin(from) {
+  if (from.id == 0) return;
+
   dragLine.attr("d", `M${from.x},${from.y}L${from.x},${from.y}`);
 
   d3.event.on("drag", () => {
diff --git a/modules/dynamic/supporters.js b/modules/dynamic/supporters.js
index 35a22313..038da4d8 100644
--- a/modules/dynamic/supporters.js
+++ b/modules/dynamic/supporters.js
@@ -40,5 +40,5 @@ export const supporters = format(`
   Jordan,William Markus,Sidr Dim,Alexander Whittaker,The Next Level,Patrick Valverde,Markus Peham,Daniel Cooper,the Beagles of Neorbus,Marley Moule,
   Maximilian Schielke,Johnathan Xavier Hutchinson,Ele,Rita,Randy Ross,John Wick,RedSpaz,cameron cannon,Ian Grau-Fay,Kyle Barrett,Charlotte Wiland,
   David Kaul,E. Jason Davis,Cyberate,Atenfox,Sea Wolf,Holly Loveless,Roekai,Alden Z,angel carrillo,Sam Spoerle,S A Rudy,Bird Law Expert,Mira Cyr,
-  Aaron Blair,Neyimadd,RLKZ1022,DerWolf,Kenji Yamada,Zion
+  Aaron Blair,Neyimadd,RLKZ1022,DerWolf,Kenji Yamada,Zion,Robert Rinne,Actual_Dio,Kyarou
 `);
diff --git a/modules/ui/hotkeys.js b/modules/ui/hotkeys.js
index 2c5a9a3a..d8fcaaf8 100644
--- a/modules/ui/hotkeys.js
+++ b/modules/ui/hotkeys.js
@@ -4,6 +4,8 @@ document.addEventListener("keydown", handleKeydown);
 document.addEventListener("keyup", handleKeyup);
 
 function handleKeydown(event) {
+  if (!allowHotkeys()) return; // in some cases (e.g. in a textarea) hotkeys are not allowed
+
   const {code, ctrlKey, altKey} = event;
   if (altKey && !ctrlKey) event.preventDefault(); // disallow alt key combinations
   if (ctrlKey && ["KeyS", "KeyC"].includes(code)) event.preventDefault(); // disallow CTRL + S and CTRL + C
@@ -12,11 +14,8 @@ function handleKeydown(event) {
 
 function handleKeyup(event) {
   if (!modules.editors) return; // if editors are not loaded, do nothing
+  if (!allowHotkeys()) return; // in some cases (e.g. in a textarea) hotkeys are not allowed
 
-  const {tagName, contentEditable} = document.activeElement;
-  if (["INPUT", "SELECT", "TEXTAREA"].includes(tagName)) return; // don't trigger if user inputs text
-  if (tagName === "DIV" && contentEditable === "true") return; // don't trigger if user inputs a text
-  if (document.getSelection().toString()) return; // don't trigger if user selects text
   event.stopPropagation();
 
   const {code, key, ctrlKey, metaKey, shiftKey, altKey} = event;
@@ -110,6 +109,14 @@ function handleKeyup(event) {
   else if (ctrl) toggleMode();
 }
 
+function allowHotkeys() {
+  const {tagName, contentEditable} = document.activeElement;
+  if (["INPUT", "SELECT", "TEXTAREA"].includes(tagName)) return false;
+  if (tagName === "DIV" && contentEditable === "true") return false;
+  if (document.getSelection().toString()) return false;
+  return true;
+}
+
 function pressNumpadSign(key) {
   const change = key === "+" ? 1 : -1;
   let brush = null;
diff --git a/modules/ui/options.js b/modules/ui/options.js
index ddbc7a5f..0683a694 100644
--- a/modules/ui/options.js
+++ b/modules/ui/options.js
@@ -76,7 +76,7 @@ document
 
 // show popup with a list of Patreon supportes (updated manually)
 async function showSupporters() {
-  const {supporters} = await import("../dynamic/supporters.js?v=01062022");
+  const {supporters} = await import("../dynamic/supporters.js?v=19062022");
   alertMessage.innerHTML =
     "<ul style='column-count: 5; column-gap: 2em'>" + supporters.map(n => `<li>${n}</li>`).join("") + "</ul>";
   $("#alert").dialog({