Hmm,

I could reproduce it now when translating https://de.wikipedia.org/wiki/Hitting-Set-Problem to Polish. The formulas were seen while translating, but upon publishing they became just <math/>. It was also reported for translating the same article into French ( https://www.mediawiki.org/wiki/Topic:Tg03j16zuwyjff0j ).

This happened also here:

1. https://he.wikipedia.org/w/index.php?title=%D7%98%D7%A8%D7%A0%D7%A1%D7%A4%D7%95%D7%A8%D7%9E%D7%A6%D7%99%D7%94_%D7%90%D7%A4%D7%99%D7%A0%D7%99%D7%AA&oldid=19906025
2. https://he.wikipedia.org/w/index.php?title=%D7%9E%D7%91%D7%A0%D7%94_%D7%A0%D7%AA%D7%95%D7%A0%D7%99%D7%9D_%D7%AA%D7%9E%D7%A6%D7%99%D7%AA%D7%99&oldid=19871215 (for few forumlas)

As Amir noted above this can be easily detected as "<math/>". You can find occurrences of such deletes using Cirrcus search: insource:/\<math .\>/

Still happening in the current version:

• https://pt.wikipedia.org/wiki/Fun%C3%A7%C3%A3o_de_Thomae?diff=48252263
• https://pt.wikipedia.org/wiki/Magma_comutativo?diff=48823674
• https://pt.wikipedia.org/wiki/Truncamento?diff=49491547
• https://pt.wikipedia.org/wiki/%C3%82ngulo_m%C3%A1gico?diff=49493849
• https://pt.wikipedia.org/wiki/Fecho_convexo_inferior?diff=49870863

Same thing reported in Arabic Wikipedia!

New report : https://www.mediawiki.org/wiki/Topic:Ubjy8fkoop2yabk8

Still preventing me from using ContentTranslator more often...
https://pt.wikipedia.org/wiki/Reta_real_estendida_projetivamente?diff=51978556

Still reproducible (and annoying): https://pt.wikipedia.org/wiki/Decomposição_de_posto_tensorial?diff=52586846

The new version of Content Translation uses the same editing surface as Visual Editor, so it is expected to render better with complex content. Can anyone reproduce some of these issues with the new version of the tool?

@He7d3r
I re-checked the first reported case - the example of the formula that needed to be inserted manually, e.g. \vec{f} e \vec{g} (https://pt.wikipedia.org/wiki/Fun%C3%A7%C3%B5es_ortogonais?diff=45888620).

With new version of the Content Translation tool it's possible to insert such formulas via VE insert Math. The formula is displayed correctly and published correctly. There are however some shortcomings, for example, when math formulas are not displayed in the source article panel - reported here T203728: CX2: Math formulas with wikitext indentation not displayed in source column. But at least there is now a workaround for inserting formulas before publishing.

I'll test other reported cases to see if math formulas have other limitations in new translation tool.

Here are test results from yesterday for all links listed in the bug. (Compares results of translation using Google, Yandex, and just straight "Copy Original Content")

In T137803#4940049, @Barbvd wrote:

Here are test results from yesterday for all links listed in the bug. (Compares results of translation using Google, Yandex, and just straight "Copy Original Content")

T137803_test-results_2-07-19.pdf1007 KBDownload

Thanks for compiling these examples, @Barbvd. From an initial look, it seems that copying math elements bypassing MT (even if MT is applied to the rest of the paragraph) would lead to better results in many cases.

Hey folks, the leftovers from this bug just hit some wikis really hard (see T288846 and duplicates). Would it be possible to get it some love, at least to the point where no math tags are inserted?