patch issue #1538

themes/common.js

@@ -242,14 +242,14 @@ function do_something_but_not_too_frequently(min_interval, func) {
             // 现在就执行
             setTimeout(() => {
                 func.apply(this, lastArgs);
-            }, 0);   
+            }, 0);
         } else if (!timeoutID) {
             // 等一会执行
             timeoutID = setTimeout(() => {
                 timeoutID = null;
                 lastInvocationTime = Date.now();
                 func.apply(this, lastArgs);
-            }, min_interval - (now - lastInvocationTime));      
+            }, min_interval - (now - lastInvocationTime));
         } else {
             // 压根不执行
         }
@@ -349,7 +349,7 @@ function get_elements(consider_state_panel = false) {
     var chatbot_height = chatbot.style.height;
     // 交换输入区位置，使得输入区始终可用
     if (!swapped) {
-        if (panel1.top != 0 && (panel1.bottom + panel1.top) / 2 < 0) { swap_input_area(); }
+        if (panel1.top != 0 && (0.9 * panel1.bottom + 0.1 * panel1.top) < 0) { swap_input_area(); }
     }
     else if (swapped) {
         if (panel2.top != 0 && panel2.top > 0) { swap_input_area(); }