Autocompletion menu functionality is broken, text is deleted instead of inserted

[eduarddejong]

When inserting code from the IntelliSense menu, all code from the text cursor to the beginning is completely deleted.
Nothing is inserted at all.

The most difficult thing is that it's really hard to avoid, since the menu opens itself frequently and typing characters leads to auto selecting text options in the menu, which already makes the experience really buggy.
(That problem exists much longer, in VS and VS Code insertions are never automatically made by typing, only by explicitly confirming the selected item by pressing Enter, but on SharpLab this does not function properly.
However, the deletion issue is is new, I haven't noticed that earlier.)

Thanks for this great extension anyway, it's otherwise really useful!

Browser: Firefox

[JasonBock]

Thankfully someone else noticed this. I haven't been to sharplab.io in a while, and when I tried to use it today, I wondered if my keyboard was possessed :). Whatever this behavior is, it's making sharplab.io unusable.

[jnm2]

This also seems to happen when typing <, >, or ;, without me seeing autocomplete being involved.

[JasonBock]

This also seems to happen when typing <, >, or ;, without me seeing autocomplete being involved.

Yeah something seems very borked on the site :(

[ashmind]

Thanks for reporting! Unfortunately I can't reproduce it (including on Firefox).

Is this on specific branch (main vs Default)?
Can you maybe share a recording of the problem?

[jnyrup]

This example is reproducible for me:
https://sharplab.io/#v2:EYLgtghglgdgNAFxAJwK4wD4AEBMBGAWAChiAxAe3IAoBKAbmKwBYACC6m4gb2Jb5ZgBTAO4sAgrQB0AIQjIqMVABsl9XvyGiJNGRABeC5aoZEAvsQskrlm9bu2H9p45fO3rj+6+fHAZwRoAMYI4izc/GFEEVgAzCzMLLLyWHgADCz+yJxR/Dw5EXwpAJxUAERJpWr5BcVlFVUR5vnqhXEJsgYp6ZnZEXkF/LXl+pUmA4V4JcN6oy0sTaZAA

What I notice:
The glitch only seems to happen when running the code and when editing the code makes a "visual jump" during execution.
I suspect this is somehow related to the insertion of the three icons

In this video, see how after commenting out some code, repeatedly pressing right-arrow to move the cursor through the lines, shows that the righmost column on each line where the cursor is placed, corresponds to the righmost column on the line below.
https://github.com/ashmind/SharpLab/assets/919634/2c2c69bc-52ae-4515-a015-1b83795fee73

[ashmind]

Thanks, I can reproduce this.
It might be a bit tricky to resolve (likely an issue in editor component internals), but I'll take a look when I am able.

[eduarddejong]

By the way, mabe it's also good to check the Visual Basic experience.

Issues are very easy to notice with it.

[PrashantUnity]

today it won't let me type any thing. Whenever there comes any Auto Suggestion it removes everything upto that point.

One things i also noticed that . Sometimes on reloading full page it works perfectly.

Thus Issue i found while i am using Chrome
But i haven't any issue while using Opera

Bug.mp4

[Phyyl]

Same issue here but in Chrome.

[jcouv]

@ashmind If it's tricky to fix, might disabling the completion be a workable mitigation?

[vladd]

Looks like it works now? Using newest Firefox.

[dongle-the-gadget]

Nope, still deletes code here. On iOS 18 Safari

[jnm2]

It depends on which branch you have selected. It deletes code constantly for me with main selected.

[siegfriedpammer]

Still an issue... please add an option to disable code completion.

[B1Z0N]

It's broken. Can we fix this somehow? I can invest time, but please we need it fixed so badly...

[canton7]

It depends on which branch you have selected. It deletes code constantly for me with main selected.

See above. Select a branch other than main, and it works fine.

[dusrdev]

@ashmind hey, any update? This is still broken and makes the website pretty much unusable, I have to use several ctrl+z's every time I press enter because it deletes the entire page...

[ashmind]

@dusrdev No update as of this moment, it is certainly on my list, but I haven't done any SharpLab work for a while, and this is one of the harder problems. Even disabling autocomplete is not trivial, but it is likely I'll start with that either way.

[DCote3B]

Still happening on various branches on Chrome for me. Sometimes (not always) reloading the page helps.

[EMWJP-U]

Still happening. Also using chrome. Its impossible to type anything, entire code is deleted. I think is not related to SharpLab by the way, in VS2022 type renaming is broken too, move type to another file is broken too. Its related to Roslyn.

In last two days they commited/merged lot of commits with checks failed and weird commit messages such as "Simplify" and "Unify", and many these changes mess with completition provider.

[ChadNedzlek]

Wow. You weren't kidding. There are THOUSANDS of commits with nonsense messages in the last month, all by the same person.

[CyrusNajmabadi]

in VS2022 type renaming is broken too, move type to another file is broken too. Its related to Roslyn.

None of this impacts the completion behavior. If you have issues with rename and/or 'move type to file' please file issues with Roslyn so we can look into it.

Wow. You weren't kidding. There are THOUSANDS of commits with nonsense messages in the last month, all by the same person.

As mentioned already: Roslyn follows a PR based strategy, where the PR is reviewed and merged in. The individual commits are up to each developer as to how they like to manage it.

[CyrusNajmabadi]

In last two days they commited/merged lot of commits with checks failed

Could you point to any PRs merged where the PR merge commit was failing checks? That should almost never happen (only in critical emergencies where we are actually unblocking something else). I'm unaware of anything like that happening for a very long time now.

[CyrusNajmabadi]

@ashmind how are you handling completion? Where do you retrieve them? And how to you apply them back to your buffer?

[EMWJP-U]

@CyrusNajmabadi

[canton7]

@EMWJP-U Err, those are intermediate commits on a branch, which was then merged to main. dotnet/roslyn#76611. The checks were all green at the point of merge. Took about 2 clicks to find that out from cold.

[CyrusNajmabadi]

@EMWJP-U I asked:

Could you point to any PRs merged where the PR merge commit was failing checks?

None of those are the merge commit. They are intermediate points in time where the developer chose to commit.

Note: these show up as failures because when we push more commits to GitHub, the existing tests are cancelled (which are reported as failures). We do this to save time and costs as we have a fixed size pool of testing machines, and we want them testing the code that will actually be merged in.

You are:

1. Equating cancelled tests with failed tests.
2. Equating intermediate commit points with the final merged pr commit.

As mentioned, Roslyn follows a PR merge oriented approach to development. The PR is the unit of relevance to the team. And once that is approved and is passing all tests, it can be merged in. Individual commits are organized by developers however they want. For me, as I often have numerous interdependent branches I'm working on simultaneously, I often have many commits to make cross Branch merges easier. Other devs follow other approaches.