I have to disagree with the "do nothing" assessment here. What sign to post on an establishment that sells alcohol (for on- or off-site consumption) is a matter of law, not choice (a PC 30.06 sign would be a matter of choice, and I agree "correcting" an improper posting of such helps no one).
If this business is a 51% business, then
by law it must post the proper sign and
by law a CHL holder may not enter the premises (regardless of whether proper sign is posted).
Now here's where my very much NON LEGAL I-AM-NOT-A-LAWYER
opinion comes in. Both PC 30.05 AND PC 46.035 offer a "defense to prosecution" if (summarizing) you enter a premises with a gun that you "should not have entered" but you did not receive valid notification via a properly worded and displayed 30.06 or 51% sign. The difference - IMHO - is that the owner or person in control of the premises has a CHOICE in all instances whether to post a PC 30.06 sign (even in a hospital, amusement park, government meeting etc., no law REQUIRES a 30.06 sign be posted), but in the case of 51% sign (and even in the blue "unlicensed" TABC sign) the owner/controller of the premises is required by law to post the valid sign.
So to elaborate further, if you enter a premises that is not properly signed with 30.06 then (again, IMHO only - IANAL) you can reasonably claim you complied with the INTENT of the owner/controller of the premises. But the INTENT of whether to allow a CHL holder into a bar is clearly spelled out in statute, so entering a 51% location past a sign that
almost (but not quite) gets it right, is a much more slippery slope, IMHO, IANAL, etc.
Furthermore, if this is indeed NOT a 51% location, then not only are they illegally posting the wrong sign and need to be corrected, but allowing this to continue serves only to futher confuse other CHL holders who happen upon this business with this sign.
So - to summarize - I think you should clarify this with TABC and ask them to ensure the business posts the correct sign.
Sec. 46.035. UNLAWFUL CARRYING OF HANDGUN BY LICENSE HOLDER.
(b) A license holder commits an offense if the license holder intentionally, knowingly, or recklessly carries a handgun under the authority of Subchapter H, Chapter 411, Government Code, regardless of whether the handgun is concealed, on or about the license holder's person:
(1) on the premises of a business that has a permit or license issued under Chapter 25, 28, 32, 69, or 74, Alcoholic Beverage Code, if the business derives 51 percent or more of its income from the sale or service of alcoholic beverages for on-premises consumption, as determined by the Texas Alcoholic Beverage Commission under Section 104.06, Alcoholic Beverage Code;
(k) It is a defense to prosecution under Subsection (b)(1) that the actor was not given effective notice under Section 411.204, Government Code.
note: obviously much of this statute has been truncated, only the portions relevant to 51% carry have been quoted above
Sec. 411.204. NOTICE REQUIRED ON CERTAIN PREMISES.
(a) A business that has a permit or license issued under Chapter 25, 28, 32, 69, or 74, Alcoholic Beverage Code, and that derives 51 percent or more of its income from the sale of alcoholic beverages for on-premises consumption as determined by the Texas Alcoholic Beverage Commission under Section 104.06, Alcoholic Beverage Code, shall prominently display at each entrance to the business premises a sign that complies with the requirements of Subsection (c).
(b) A hospital licensed under Chapter 241, Health and Safety Code, or a nursing home licensed under Chapter 242, Health and Safety Code, shall prominently display at each entrance to the hospital or nursing home, as appropriate, a sign that complies with the requirements of Subsection (c) other than the requirement that the sign include on its face the number "51".
(c) The sign required under Subsections (a) and (b) must give notice in both English and Spanish that it is unlawful for a person licensed under this subchapter to carry a handgun on the premises. The sign must appear in contrasting colors with block letters at least one inch in height and must include on its face the number "51" printed in solid red at least five inches in height. The sign shall be displayed in a conspicuous manner clearly visible to the public.
(d) A business that has a permit or license issued under the Alcoholic Beverage Code and that is not required to display a sign under this section may be required to display a sign under Section 11.041 or 61.11, Alcoholic Beverage Code.
(e) This section does not apply to a business that has a food and beverage certificate issued under the Alcoholic Beverage Code.