Invoke WaveDrom.ProcessAll() directly, rather than from an onload. This

seems to fix an issue where traces don't render the first time when executing a
`render_trace()` cell.

Author: fdxmw

pyrtl/simulation.py

@@ -1763,6 +1763,7 @@ def render_trace(
         if _currently_in_jupyter_notebook():
             from IPython.display import (
                 HTML,
+                Javascript,
                 display,
             )
 
@@ -1773,13 +1774,13 @@ def render_trace(
             )
             html_elem = HTML(htmlstring)
             display(html_elem)
-            # print(htmlstring)
+
             html_stuff = """
             <script src="https://cdnjs.cloudflare.com/ajax/libs/wavedrom/1.6.2/skins/default.js"></script>
             <script src="https://cdnjs.cloudflare.com/ajax/libs/wavedrom/1.6.2/wavedrom.min.js"></script>
-            <style onload="WaveDrom.ProcessAll();"></style>
             """
             display(HTML(html_stuff))
+            display(Javascript("WaveDrom.ProcessAll();"))
         else:
             self.render_trace_to_text(
                 trace_list=trace_list,