Tertiary guns not firing a single shell - deliberate?

[Arralen]

Just fought a 1892 battle 20sm south of Tsingtao, JP against CN.
2 CL (3300ts) and 2 KE (sooo cute!! And heroic, at least as long as their squadron was set to "support". "Indy" made them run away instantly ... )

cutie.png (4.48 KiB) Viewed 708 times

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against 2 CLs (3200 and 4500ts):
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###### 10026 3rdGunsNoFire.png (24.96 KiB) Viewed 708 times

As clearly visible, the chinese behemeoth did not fire its tertiary guns at all.
Neither did my 2 CLs.
The ships logs do not show them firing either.
No. of targets can't be a thing here, the Nan Shui had enough and quiet squishy targets to shoot at?!

Mid-battle save is available (I hope).

[Erik Rutins]

How close did you get to the enemy?

[Arralen]

From the log of NAN SHUI:
05:08:04 4 in 4090 yds Near miss! (CL Izumi, HE)
05:08:19 5 in 2968 yds Near miss! (CL Izumi, HE)
05:08:21 4 in 3435 yds Secondary battery hit (KE Keihuku Maru, HE)
05:08:21 4 in 2673 yds Superstructure hit. Shell burst limited by coal bunker (CL Izumi, AP)
05:08:26 5 in 2134 yds Superstructure hit * Fire started Main gun crews cut down by splinters (CL Izumi, AP)
05:08:28 4 in 1947 yds Secondary battery hit (CL Izumi, AP)
05:08:29 5 in 1863 yds Near miss! (CL Izumi, AP)
05:08:30 4 in 1760 yds Engine room hit B (CL Unebi, AP)
...
05:11:29 4 in 799 yds Superstructure hit * (CL Izumi, AP) (here all the tert. rate guns might all have been dead already, though; looks like the log does not show hits on those guns either)

Range of those 2"Q0 guns is 4000 yards, says the ship designer ... .

[MaximKI]

Could you please post a save if you have it on hand that shows the issue?

[Arralen]

Bug #15603 1.00.26 Tertiary guns of player and AI ships are not firing

[Arralen]

Update:
Had another battle that dragged on from nearly dusk well into the night.

Tertiary guns on my BBs (4") and the AI BB (2") worked.
=> so it can't be tertiaries in general, or <4" only or a problem with the visibility?!

Tert. guns on my CL (the very same from the 1st battle) did not work, again
and
The main guns of the AI BB did not fire a shot, although they did (judging from the ship info popup) track their target.

So ... there might be an issue with the 1890-start prebuild ships?!
.

Edit: Uploaded the mid-battle save. Thought I already had done that, yet ... no file. Now there is!