Quick Symbols Broken? Troubleshooting Guidance

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This is the most recent thread I found about the quick symbols. I would like to suggest a few changes. This is the list of symbols that's used right now.

Ω σ μ ε τ ω
κ α β γ δ η
θ λ π ρ ζ χ
ψ ∞ Θ √ Δ ς
∂ ∑ ∏ ∇ ≈ ≠
≤ ≥ ∫ → ← ∴
ø ° ∠ ƒ ⇔ ∃

For me, the biggest omission by far is ×. I use it all the time to say things like "A×B" or "4×1 matrix". I'd say that it's about twice as useful as all the other symbols combined. And I'm pretty sure it used to be on this list. I would also like to see ·, ℝ, ℂ, ±, ħ. Maybe also ℚ, ℤ but those two are less important. The symbols that seem the least useful to me are ƒ, ∠, ∴, ς, ←, ∃ and maybe also ⇔.

If ∃ is on the list, shouldn't ∀ (for all) be there too? I think ∀ is more useful than ∃. But I don't think I would use either of them. I'll just write out the words (99% of the time) or use LaTeX (1 %) of the time. The logical symbols ¬ (not), ∧ (and) and ∨ (or) could perhaps be useful too, but probably not to me. I would just use LaTeX, ##\lnot,\land,\lor##.

I'm pretty confused by some things that are said earlier in this thread. Do you guys not see the same things that I do? Someone referred to these as "alpha" and "sigma": σ α To me the "alpha" is an uppercase I with a ¨ (two dots) on top, followed by a weird f, and the "sigma" is an uppercase I with a ^ on top, followed by a ##\pm##.
 
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Fredrik said:
Someone referred to these as "alpha" and "sigma": σ α To me the "alpha" is an uppercase I with a ¨ (two dots) on top, followed by a weird f, and the "sigma" is an uppercase I with a ^ on top, followed by a ##\pm##.

That clearly means that problem with displaying some of the symbols is related to their UTF-8 representation being treated not as a single entity, but as several separate characters.

(Whatever it means in this particular case - can be a bug in HTML, can be a bug in a browser, can be something else, it is just obvious what is being mistreated).
 
There's a new problem with the Advanced Reply Box which has cropped up in the last couple of days.

The Big Sigma which used to appear at the Right Hand Side of the Menu Bar has disappeared and Quick Symbols apparently cannot be accessed anymore, at least I can't access them. This feature worked for me a couple of days ago, and now, Poof!

I'm using Win 7 Home Premium with Firefox V28.0 as my browser.
 
SteamKing said:
There's a new problem with the Advanced Reply Box which has cropped up in the last couple of days.

The Big Sigma which used to appear at the Right Hand Side of the Menu Bar has disappeared and Quick Symbols apparently cannot be accessed anymore, at least I can't access them. This feature worked for me a couple of days ago, and now, Poof!

I'm using Win 7 Home Premium with Firefox V28.0 as my browser.
It's supposed to be like that in many of the forums here, in particular this one (forum feedback & announcements). Can you try it in a forum that's more math-oriented, like linear algebra or relativity?