Debugger raise "NameError" when it hovers the mouse cursor over ".new" in VSCode

[ono-max]

Your environment

• ruby -v:
  ruby 2.6.7p197 (2021-04-05 revision 67941) [x86_64-darwin20]

Describe the bug
When it hovers the mouse cursor over ".new", debugger raise "NameError" as follows:

$ exe/rdbg target.rb --open=vscode
DEBUGGER: Debugger can attach via UNIX domain socket (/var/folders/kv/w1k6nh1x5fl7vx47b2pd005w0000gn/T/ruby-debug-sock-501/ruby-debug-naotto-43763)
DEBUGGER: wait for debugger connection...
Launching: code /var/folders/kv/w1k6nh1x5fl7vx47b2pd005w0000gn/T/ruby-debug-vscode-20211226-43763-1vukogr/ /var/folders/kv/w1k6nh1x5fl7vx47b2pd005w0000gn/T/ruby-debug-vscode-20211226-43763-1vukogr/README.rb
DEBUGGER: Connected.
["DEBUGGER Exception: /Users/naotto/workspace/debug/lib/debug/thread_client.rb:986",
 #<NameError: wrong constant name Sample.new>,
 ["/Users/naotto/workspace/debug/lib/debug/server_dap.rb:813:in `const_defined?'",
  "/Users/naotto/workspace/debug/lib/debug/server_dap.rb:813:in `block (2 levels) in search_const'",
  "/Users/naotto/workspace/debug/lib/debug/server_dap.rb:812:in `all?'",
  "/Users/naotto/workspace/debug/lib/debug/server_dap.rb:812:in `block in search_const'",
  "/Users/naotto/workspace/debug/lib/debug/server_dap.rb:811:in `reverse_each'",
  "/Users/naotto/workspace/debug/lib/debug/server_dap.rb:811:in `search_const'",
  "/Users/naotto/workspace/debug/lib/debug/server_dap.rb:749:in `process_dap'",
  "/Users/naotto/workspace/debug/lib/debug/thread_client.rb:975:in `wait_next_action_'",
  "/Users/naotto/workspace/debug/lib/debug/thread_client.rb:676:in `wait_next_action'",
  "/Users/naotto/workspace/debug/lib/debug/thread_client.rb:284:in `suspend'",
  "/Users/naotto/workspace/debug/lib/debug/thread_client.rb:217:in `on_breakpoint'",
  "/Users/naotto/workspace/debug/lib/debug/breakpoint.rb:65:in `suspend'",
  "/Users/naotto/workspace/debug/lib/debug/breakpoint.rb:157:in `block in setup'",
  "target.rb:1:in `<main>'"]]
DEBUGGER: Disconnected.
/Users/naotto/workspace/debug/lib/debug/server_dap.rb:813:in `const_defined?': wrong constant name Sample.new (NameError)
	from /Users/naotto/workspace/debug/lib/debug/server_dap.rb:813:in `block (2 levels) in search_const'
	from /Users/naotto/workspace/debug/lib/debug/server_dap.rb:812:in `all?'
	from /Users/naotto/workspace/debug/lib/debug/server_dap.rb:812:in `block in search_const'
	from /Users/naotto/workspace/debug/lib/debug/server_dap.rb:811:in `reverse_each'
	from /Users/naotto/workspace/debug/lib/debug/server_dap.rb:811:in `search_const'
	from /Users/naotto/workspace/debug/lib/debug/server_dap.rb:749:in `process_dap'
	from /Users/naotto/workspace/debug/lib/debug/thread_client.rb:975:in `wait_next_action_'
	from /Users/naotto/workspace/debug/lib/debug/thread_client.rb:676:in `wait_next_action'
	from /Users/naotto/workspace/debug/lib/debug/thread_client.rb:284:in `suspend'
	from /Users/naotto/workspace/debug/lib/debug/thread_client.rb:217:in `on_breakpoint'
	from /Users/naotto/workspace/debug/lib/debug/breakpoint.rb:65:in `suspend'
	from /Users/naotto/workspace/debug/lib/debug/breakpoint.rb:157:in `block in setup'
	from target.rb:1:in `<main>'

To Reproduce

class Sample
  def a
    p :a
  end
end

s = Sample.new
s.a

b = 1
c = 1

Expected behavior
It should not raise an error.

Additional context
Add any other context about the problem here.