Attempting to return a polars lazyframe removes the console

System details:

Positron and OS details: Positron Version: 2024.08.0 (Universal) build 48

Code - OSS Version: 1.91.0
Commit: ed616b36655fb24d116108bdd833f1321704315b
Date: 2024-08-19T04:26:51.868Z
Electron: 29.4.0
Chromium: 122.0.6261.156
Node.js: 20.9.0
V8: 12.2.281.27-electron.0
OS: Darwin arm64 23.5.0

Interpreter details:

Python 3.12.0

Describe the issue:

Attempting to print a lazy polars dataframe, ie, df.lazy() will remove the console.

https://github.com/user-attachments/assets/6e331326-87e9-443c-a396-5ecb0bed26ac

Steps to reproduce the issue:

1. Create a lazy dataframe:

import polars as pl
df = pl.DataFrame({"a": [1, 2, 3], "b": [4, 5, 6]})
lf = df.lazy()

2. Note that the console will disappear
3. You can bring the console back by reloading the webview.

Expected or desired behavior:

The lazyframe should at least not remove the console, and if executed should show the query plan:

For example if you do print(lf), it will work fine:

print(lf)
naive plan: (run LazyFrame.explain(optimized=True) to see the optimized plan)

DF ["a", "b"]; PROJECT */2 COLUMNS; SELECTION: None

An example of calling lf would be something like:

<LazyFrame [2 operations]>
Operations:
    [1] filter [col("age") > 30]
    [2] select [columns = ['name', 'age']]

Were there any error messages in the UI, Output panel, or Developer Tools console?

In python console output:

Positron] SEND execute_request: OK
[Positron] Python kernel status changed: idle => busy
[Positron] RECV status/busy from iopub: {"header":{"msg_id":"5c83c4f8-aa828f65988030da9d331fc7_45638_118","msg_type":"status","username":"thomasmock","session":"5c83c4f8-aa828f65988030da9d331fc7","date":"2024-08-27T20:28:58.344230Z","version":"5.3"},"parent_header":{"msg_id":"fragment-666be1dd-8540-469b-96f6-82aa45b2983c","msg_type":"execute_request","version":"5.0","date":"2024-08-27T20:28:58.343000Z","session":"9a9525fc6fef51d2cabc1a4a5778cf5a","username":"thomasmock"},"metadata":{},"content":{"execution_state":"busy"},"buffers":[]}
[Positron] RECV execute_input from iopub: {"header":{"msg_id":"5c83c4f8-aa828f65988030da9d331fc7_45638_119","msg_type":"execute_input","username":"thomasmock","session":"5c83c4f8-aa828f65988030da9d331fc7","date":"2024-08-27T20:28:58.345060Z","version":"5.3"},"parent_header":{"msg_id":"fragment-666be1dd-8540-469b-96f6-82aa45b2983c","msg_type":"execute_request","version":"5.0","date":"2024-08-27T20:28:58.343000Z","session":"9a9525fc6fef51d2cabc1a4a5778cf5a","username":"thomasmock"},"metadata":{},"content":{"code":"lf","execution_count":5},"buffers":[]}
[Positron] RECV execute_result from iopub: {"header":{"msg_id":"5c83c4f8-aa828f65988030da9d331fc7_45638_120","msg_type":"execute_result","username":"thomasmock","session":"5c83c4f8-aa828f65988030da9d331fc7","date":"2024-08-27T20:28:58.347484Z","version":"5.3"},"parent_header":{"msg_id":"fragment-666be1dd-8540-469b-96f6-82aa45b2983c","msg_type":"execute_request","version":"5.0","date":"2024-08-27T20:28:58.343000Z","session":"9a9525fc6fef51d2cabc1a4a5778cf5a","username":"thomasmock"},"metadata":{},"content":{"data":{"text/plain":"<LazyFrame at 0x12308BB00>","text/html":"<h4>NAIVE QUERY PLAN</h4><p>run <b>LazyFrame.show_graph()</b> to see the optimized version</p><?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n<!-- Generated by graphviz version 10.0.1 (20240210.2158)\n -->\n<!-- Title: polars_query Pages: 1 -->\n<svg width=\"68pt\" height=\"66pt\"\n viewBox=\"0.00 0.00 67.50 65.50\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 61.5)\">\n<title>polars_query</title>\n<polygon fill=\"white\" stroke=\"none\" points=\"-4,4 -4,-61.5 63.5,-61.5 63.5,4 -4,4\"/>\n<!-- p1 -->\n<g id=\"node1\" class=\"node\">\n<title>p1</title>\n<polygon fill=\"none\" stroke=\"black\" points=\"59.5,-57.5 0,-57.5 0,0 59.5,0 59.5,-57.5\"/>\n<text text-anchor=\"middle\" x=\"29.75\" y=\"-40.2\" font-family=\"Times,serif\" font-size=\"14.00\">TABLE</text>\n<text text-anchor=\"middle\" x=\"29.75\" y=\"-23.7\" font-family=\"Times,serif\" font-size=\"14.00\">π */2;</text>\n<text text-anchor=\"middle\" x=\"29.75\" y=\"-7.2\" font-family=\"Times,serif\" font-size=\"14.00\">σ None</text>\n</g>\n</g>\n</svg>\n"},"metadata":{},"execution_count":5},"buffers":[]}
[Positron] RECV comm_msg/positron-variables-python-2-6d6e684e/undefined from iopub: {"header":{"msg_id":"5c83c4f8-aa828f65988030da9d331fc7_45638_121","msg_type":"comm_msg","username":"thomasmock","session":"5c83c4f8-aa828f65988030da9d331fc7","date":"2024-08-27T20:28:58.604378Z","version":"5.3"},"parent_header":{"msg_id":"fragment-666be1dd-8540-469b-96f6-82aa45b2983c","msg_type":"execute_request","version":"5.0","date":"2024-08-27T20:28:58.343000Z","session":"9a9525fc6fef51d2cabc1a4a5778cf5a","username":"thomasmock"},"metadata":{},"content":{"data":{"jsonrpc":"2.0","method":"update","params":{"assigned":[],"unevaluated":[{"access_key":"{\"type\":\"str\",\"data\":\"lf\"}","display_name":"lf","display_value":"<LazyFrame at 0x12308BB00>","display_type":"LazyFrame","type_info":"polars.lazyframe.frame.LazyFrame","size":48,"kind":"other","length":77,"has_children":true,"has_viewer":false,"is_truncated":false,"updated_time":1724790538604}],"removed":[],"version":0}},"comm_id":"positron-variables-python-2-6d6e684e"},"buffers":[]}
[Positron] Python kernel status changed: busy => idle
[Positron] RECV status/idle from iopub: {"header":{"msg_id":"5c83c4f8-aa828f65988030da9d331fc7_45638_123","msg_type":"status","username":"thomasmock","session":"5c83c4f8-aa828f65988030da9d331fc7","date":"2024-08-27T20:28:58.605807Z","version":"5.3"},"parent_header":{"msg_id":"fragment-666be1dd-8540-469b-96f6-82aa45b2983c","msg_type":"execute_request","version":"5.0","date":"2024-08-27T20:28:58.343000Z","session":"9a9525fc6fef51d2cabc1a4a5778cf5a","username":"thomasmock"},"metadata":{},"content":{"execution_state":"idle"},"buffers":[]}
[Positron] RECV execute_reply from shell: {"header":{"msg_id":"5c83c4f8-aa828f65988030da9d331fc7_45638_122","msg_type":"execute_reply","username":"thomasmock","session":"5c83c4f8-aa828f65988030da9d331fc7","date":"2024-08-27T20:28:58.605477Z","version":"5.3"},"parent_header":{"msg_id":"fragment-666be1dd-8540-469b-96f6-82aa45b2983c","msg_type":"execute_request","version":"5.0","date":"2024-08-27T20:28:58.343000Z","session":"9a9525fc6fef51d2cabc1a4a5778cf5a","username":"thomasmock"},"metadata":{"started":"2024-08-27T20:28:58.345025Z","dependencies_met":true,"engine":"9d5a8c8b-e767-4eff-af69-4c1047263838","status":"ok"},"content":{"status":"ok","execution_count":5,"user_expressions":{},"payload":[]},"buffers":[]}
[Positron] SEND heartbeat with timeout of 30 seconds

Reproduce the issue in the Python console with a Polars LazyFrame created using df.lazy(), then inspect the Developer Tools console and Output panel for the failure. Done means evaluating the LazyFrame no longer removes the console and displays a useful query plan or other result.