I just encountered the problem of disappeared buttons in the editor, both in HTML and in TinyMCE view – the latter I couldn’t even select. As I didn’t find the solution in the WWW, I now post it here to possibly help others:<\/p>\n
The problem was the PHP memory usage. My installation is running close to the upper limit as given by the provider. Once I reduced the usage by deactivating the plugins I do only need for maintenance purposes, the editor worked fine again.<\/p>\n
I crosschecked: It was not due to specific plugin conflicts, but only due to overal PHP memory usage.<\/p>\n
Hope this might help others with similar problems.<\/p>\n
Cheers
\nAnders<\/p>\n
ps: I find the plugin “WP Memory Load and db size Usage” to be very useful as it shows the actual PHP memory usage in the admin bar.<\/p>\n","protected":false},"template":"","class_list":["post-4039429","topic","type-topic","status-closed","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/4039429","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/4039429\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=4039429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}