Cf.
this post for instructions, but read "3.15.0" instead of "3.12.0"
This time I changed some values for the inline dictionary panel too. Most critical are words that are located roughly halfway between top and bottom. If words in such a position are selected the selection circles, or the annotation/search/share panel tend to be hidden by the enlarged dictionary panel. If the circles are hidden, you can make them accessible by touching the annotation/search/share panel (cf. screen_002.png, screen_003.png). If the annotation/search/share panel is hidden you can make it accessible by touching the left circle (cf. screen_004.png, screen_005.png).
If you need to change the height of the inline dictionary panel and its text field, look for #InlineDictionaryView in nickel.txt, and for #textEdit in libnickel.so.1.0.0.txt.
I attach also the patch files in Metazoa style (mbe_3.15.0_mz-style.zip). Be aware that not all patches of the regular package are covered by them.