When manually entering time, my entry included the word "web.config". Upon attempting to save the entry, the UI just rejected the time, but did not show any errors; it simply disallowed the entry w/o information; zero, nada, zilch.
After refreshing the broswer page, the same behavior occurred. I then took a look at the browser dev tools and saw the response from the server, which was an entire web page from Cloudflare.
Here's the relevant bits from the HTML page that was hidden in the response.
Why have I been blocked?
This website is using a security service to protect itself from online attacks. The action you just performed triggered the security solution. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data.
Seriously? using the term "web.config" is triggering this notice? Why is Upwork not sanitizing the input on their side anyhow? And even worse, why is there absolutely ZERO information presented to us in the UI that an error has occured? I just spent 15 minutes trying to figure out why my entry wasn't being accepted due to Upwork's crappy UI.
Here's the entire response from the server that was hidden.
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<title>Attention Required! | Cloudflare</title>
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<style>body{margin:0;padding:0}</style>
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<div id="cf-wrapper">
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<div class="cf-wrapper cf-header cf-error-overview">
<h1 data-translate="block_headline">Sorry, you have been blocked</h1>
<h2 class="cf-subheadline"><span data-translate="unable_to_access">You are unable to access</span> upwork.com</h2>
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<div class="cf-section cf-wrapper">
<div class="cf-columns two">
<div class="cf-column">
<h2 data-translate="blocked_why_headline">Why have I been blocked?</h2>
<p data-translate="blocked_why_detail">This website is using a security service to protect itself from online attacks. The action you just performed triggered the security solution. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data.</p>
</div>
<div class="cf-column">
<h2 data-translate="blocked_resolve_headline">What can I do to resolve this?</h2>
<p data-translate="blocked_resolve_detail">You can email the site owner to let them know you were blocked. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page.</p>
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<p class="text-13">
<span class="cf-footer-item sm:block sm:mb-1">Cloudflare Ray ID: <strong class="font-semibold">72ec47949d642bd8</strong></span>
<span class="cf-footer-separator sm:hidden">•</span>
<span id="cf-footer-item-ip" class="cf-footer-item hidden sm:block sm:mb-1">
Your IP:
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<span class="hidden" id="cf-footer-ip">154.6.20.68</span>
<span class="cf-footer-separator sm:hidden">•</span>
</span>
<span class="cf-footer-item sm:block sm:mb-1"><span>Performance & security by</span> <a rel="noopener noreferrer" href="https://www.cloudflare.com/5xx-error-landing" id="brand_link" target="_blank">Cloudflare</a></span>
</p>
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