diff --git a/copyparty/fsutil.py b/copyparty/fsutil.py
index 3cb91dc4..88b33ef8 100644
--- a/copyparty/fsutil.py
+++ b/copyparty/fsutil.py
@@ -6,11 +6,13 @@ import time
 import re
 
 from .__init__ import ANYWIN, MACOS
-from .util import RootLogger, min_ex, chkcmd
+from .util import min_ex, chkcmd
 from .authsrv import VFS, AXS
 
 try:
     from typing import Optional, Union
+
+    from .util import RootLogger
 except:
     pass
 
diff --git a/copyparty/httpcli.py b/copyparty/httpcli.py
index b6df6773..079974fc 100644
--- a/copyparty/httpcli.py
+++ b/copyparty/httpcli.py
@@ -235,7 +235,9 @@ class HttpCli(object):
         self.is_ancient = self.ua.startswith("Mozilla/4.")
 
         zs = self.headers.get("connection", "").lower()
-        self.keepalive = not zs.startswith("close") and self.http_ver != "HTTP/1.0"
+        self.keepalive = not zs.startswith("close") and (
+            self.http_ver != "HTTP/1.0" or zs == "keep-alive"
+        )
         self.is_https = (
             self.headers.get("x-forwarded-proto", "").lower() == "https" or self.tls
         )
diff --git a/copyparty/httpconn.py b/copyparty/httpconn.py
index 067e2d31..06bbb539 100644
--- a/copyparty/httpconn.py
+++ b/copyparty/httpconn.py
@@ -97,6 +97,8 @@ class HttpConn(object):
         self.log_func(self.log_src, msg, c)
 
     def get_u2idx(self) -> U2idx:
+        # one u2idx per tcp connection;
+        # sqlite3 fully parallelizes under python threads
         if not self.u2idx:
             self.u2idx = U2idx(self)
 
diff --git a/copyparty/web/browser.css b/copyparty/web/browser.css
index 2af59a52..2b520bf5 100644
--- a/copyparty/web/browser.css
+++ b/copyparty/web/browser.css
@@ -1545,7 +1545,7 @@ html.y #tree.nowrap .ntree a+a:hover {
 	padding: 0 1.2em 0 0;
 	font-size: 4em;
 	opacity: 0;
-	animation: 1s linear .05s infinite forwards spin, .2s ease .05s 1 forwards fadein;
+	animation: 1s linear .15s infinite forwards spin, .2s ease .15s 1 forwards fadein;
 	position: absolute;
 	z-index: 9;
 }
diff --git a/copyparty/web/browser.js b/copyparty/web/browser.js
index eb79f33a..55a9ec93 100644
--- a/copyparty/web/browser.js
+++ b/copyparty/web/browser.js
@@ -3827,6 +3827,7 @@ function tree_neigh(n) {
 
 	treectl.dir_cb = tree_scrollto;
 	links[act].click();
+	links[act].focus();
 }
 
 
@@ -4638,7 +4639,7 @@ var treectl = (function () {
 	}
 
 	function reload_tree() {
-		var cdir = get_vpath(),
+		var cdir = r.nextdir || get_vpath(),
 			links = QSA('#treeul a+a'),
 			nowrap = QS('#tree.nowrap') && QS('#hovertree.on'),
 			act = null;
@@ -4744,6 +4745,7 @@ var treectl = (function () {
 		if (hpush && !no_tree)
 			get_tree('.', xhr.top);
 
+		r.nextdir = xhr.top;
 		enspin(thegrid.en ? '#gfiles' : '#files');
 	}
 
@@ -4766,6 +4768,7 @@ var treectl = (function () {
 		if (!xhrchk(this, L.fl_xe1, L.fl_xe2))
 			return;
 
+		r.nextdir = null;
 		var cur = ebi('files').getAttribute('ts');
 		if (cur && parseInt(cur) > this.ts) {
 			console.log("reject ls");
diff --git a/scripts/sfx.ls b/scripts/sfx.ls
index df68a664..d08d1843 100644
--- a/scripts/sfx.ls
+++ b/scripts/sfx.ls
@@ -11,6 +11,7 @@ copyparty/broker_mp.py,
 copyparty/broker_mpw.py,
 copyparty/broker_thr.py,
 copyparty/broker_util.py,
+copyparty/fsutil.py,
 copyparty/ftpd.py,
 copyparty/httpcli.py,
 copyparty/httpconn.py,